startval in JSON Parameter Config Groovy Script not being used as default value when the job is executed by Timer or by other jobs

Jenkins and plugins versions report

Environment

``` Jenkins: 2.361.2 OS: Linux - 5.15.0-1033-aws Java: 11.0.19 - Ubuntu (OpenJDK 64-Bit Server VM) --- ace-editor:1.1 ant:481.v7b_09e538fcca antisamy-markup-formatter:2.7 apache-httpcomponents-client-4-api:4.5.13-138.v4e7d9a_7b_a_e61 aws-credentials:191.vcb_f183ce58b_9 aws-java-sdk-ec2:1.12.287-357.vf82d85a_6eefd aws-java-sdk-minimal:1.12.287-357.vf82d85a_6eefd bitbucket:223.vd12f2bca5430 bitbucket-approve:1.0.3 bitbucket-build-status-notifier:1.4.2 bitbucket-pullrequest-builder:1.5.0 bitbucket-push-and-pull-request:2.8.3 bootstrap5-api:5.2.1-3 bouncycastle-api:2.26 branch-api:2.1046.v0ca_37783ecc5 build-timeout:1.24 build-user-vars-plugin:1.9 caffeine-api:2.9.3-65.v6a_47d0f4d1fe checks-api:1.7.5 cloudbees-folder:6.758.vfd75d09eea_a_1 command-launcher:90.v669d7ccb_7c31 commons-lang3-api:3.12.0-36.vd97de6465d5b_ commons-text-api:1.10.0-27.vb_fa_3896786a_7 conditional-buildstep:1.4.2 config-file-provider:3.11.1 configuration-as-code:1569.vb_72405b_80249 copyartifact:1.47 credentials:1189.vf61b_a_5e2f62e credentials-binding:523.vd859a_4b_122e6 cucumber-slack-notifier:0.8.3 custom-folder-icon:2.3 display-url-api:2.3.6 durable-task:501.ve5d4fc08b0be ec2:2.0.4 echarts-api:5.4.0-1 email-ext:2.92 extended-choice-parameter:359.v35dcfdd0c20d extensible-choice-parameter:1.8.0 external-monitor-job:203.v683c09d993b_9 font-awesome-api:6.2.0-3 generic-webhook-trigger:1.85.2 git:4.12.1 git-client:3.12.1 git-parameter:0.9.18 global-variable-string-parameter:1.2 instance-identity:116.vf8f487400980 ionicons-api:31.v4757b_6987003 jackson2-api:2.13.4.20221013-295.v8e29ea_354141 jacoco:3.3.2 jakarta-activation-api:2.0.1-2 jakarta-mail-api:2.0.1-2 javadoc:226.v71211feb_e7e9 javax-activation-api:1.2.0-5 javax-mail-api:1.6.2-8 jaxb:2.3.7-1 jdk-tool:55.v1b_32b_6ca_f9ca job-dsl:1.81 jobConfigHistory:1176.v1b_4290db_41a_5 jquery:1.12.4-1 jquery3-api:3.6.1-2 jsch:0.1.55.61.va_e9ee26616e7 junit:1153.v1c24f1a_d2553 ldap:2.12 mailer:438.v02c7f0a_12fa_4 matrix-auth:3.1.5 matrix-project:785.v06b_7f47b_c631 mercurial:1260.vdfb_723cdcc81 mina-sshd-api-common:2.9.1-44.v476733c11f82 mina-sshd-api-core:2.9.1-44.v476733c11f82 miniorange-saml-sp:1.0.14 momentjs:1.1.1 multiple-scms:0.8 node-iterator-api:49.v58a_8b_35f8363 nodejs:1.5.1 nodelabelparameter:1.11.0 pam-auth:1.10 parameterized-trigger:2.45 pipeline-build-step:2.18 pipeline-graph-analysis:195.v5812d95a_a_2f9 pipeline-groovy-lib:613.v9c41a_160233f pipeline-input-step:456.vd8a_957db_5b_e9 pipeline-milestone-step:101.vd572fef9d926 pipeline-model-api:2.2118.v31fd5b_9944b_5 pipeline-model-definition:2.2118.v31fd5b_9944b_5 pipeline-model-extensions:2.2118.v31fd5b_9944b_5 pipeline-rest-api:2.27 pipeline-stage-step:296.v5f6908f017a_5 pipeline-stage-tags-metadata:2.2118.v31fd5b_9944b_5 pipeline-stage-view:2.27 pipeline-utility-steps:2.13.0 plain-credentials:139.ved2b_9cf7587b plugin-util-api:2.18.0 popper2-api:2.11.6-2 publish-over:0.22 publish-over-ssh:1.24 resource-disposer:0.20 role-strategy:562.v44e9a_e828d0e run-condition:1.5 saml:4.369.v13507586ef8c scm-api:621.vda_a_b_055e58f7 script-security:1189.vb_a_b_7c8fd5fde slack:629.vf00ea_cb_40d53 slave-status:1.6 snakeyaml-api:1.32-86.ve3f030a_75631 sonar:2.14 ssh-agent:295.v9ca_a_1c7cc3a_a_ ssh-credentials:305.v8f4381501156 ssh-slaves:2.854.v7fd446b_337c9 ssh-steps:2.0.39.v831c5e6468b_c sshd:3.249.v2dc2ea_416e33 structs:324.va_f5d6774f3a_d token-macro:308.v4f2b_ed62b_b_16 trilead-api:2.72.v2a_3236754f73 uno-choice:2.6.5 variant:59.vf075fe829ccb windows-slaves:1.8.1 workflow-aggregator:590.v6a_d052e5a_a_b_5 workflow-api:1200.v8005c684b_a_c6 workflow-basic-steps:994.vd57e3ca_46d24 workflow-cps:2803.v1a_f77ffcc773 workflow-durable-task-step:1210.va_1e5d77e122b workflow-job:1249.v7d974144cc14 workflow-multibranch:716.vc692a_e52371b_ workflow-remote-loader:1.5 workflow-scm-step:400.v6b_89a_1317c9a_ workflow-step-api:639.v6eca_cd8c04a_a_ workflow-support:839.v35e2736cfd5c ws-cleanup:0.43 ```

What Operating System are you using (both controller, and any agents involved in the problem)?

Ubuntu 20.04

Reproduction steps

Create a simple pipeline with an extended choice parameter named config.

The parameter is JSON Parameter Config with following Groovy Script :

return new groovy.json.JsonSlurper().parseText(/{
"disable_edit_json": true,
"disable_properties": true,
"no_additional_properties": true,
"disable_collapse": true,
"disable_array_add": true,
"disable_array_delete": false,
"disable_array_reorder": true,
"theme": "bootstrap2",
"iconlib":"fontawesome4",
"schema":{
"type": "array",
"disable_array_delete_all_rows" : true,
"disable_array_delete_last_row" : true,
"title": "Build Configurations",
"format": "table",
"items": {
"type": "object",
"properties": {
  "service" : {
    "type": "string",
    "readOnly": "true",
    "propertyOrder" : 1
  },
  "source_branch" : {
    "type": "string",
    "readOnly": "true",
    "propertyOrder" : 2
  },
  "deploy" : {
    "type": "boolean",
    "format": "checkbox",
    "propertyOrder" : 3
  },
}
}
},
"startval":[
{
"service": "service1",
"source_branch": "dev"
},
{
"service": "service2",
"source_branch": "dev"
},
{
"service": "service3",
"source_branch": "master"
}
]
}/);

The jenkins job has simple following pipeline groovy script to print the value of CONFIG parameter :

pipeline { agent any

stages {
    stage('test') {
        steps {
            script{
                echo "${params.CONFIG}"                   
            }
        }
    }
}

}



4. When this job is manually triggered, I'm getting the value of startval JSON as the output. But when the job is triggered by a timer or by an upstream job with the help of groovy script, I'm getting `null` as the output. 

### Expected Results

I'm expecting the plugin the return the startval as the default value for the parameter when it's triggered by a timer or by any other job.

### Actual Results

null

### Anything else?

_No response_

jenkinsci / extended-choice-parameter-plugin