Key/Value properties style for beans does not work

[mgubaidullin]

Describe the bug

Karavan supports traditional Bean properties

  template:
    beans:
      - name: dsBean
        type: "#class:org.apache.commons.dbcp2.BasicDataSource"
        properties:
          username: '{{username}}'
          password: '{{password}}'
          url: 'jdbc:postgresql://{{serverName}}:{{serverPort}}/{{databaseName}}'
          driverClassName: 'org.postgresql.Driver'

However some Kamelets contains new one

  template:
    beans:
      - name: schemaResolver
        type: "#class:org.apache.camel.component.jackson.avro.transform.AvroSchemaResolver"
        property:
          - key: validate
            value: '{{validate}}'
          - key: schema
            value: '{{schema:}}'

Steps to reproduce the behavior

1. Go to '...'a
2. Click on '....'
3. Scroll down to '....'
4. See error

Variant

Web Application

Container Management (if applicable)

None

Operating System (if applicable)

None

Version

4.5.0

Relevant log output

No response

[mgubaidullin]

Because of that https://issues.apache.org/jira/browse/CAMEL-20698