fix(decl): use SetUint for open_mode uint32 field

[jacalvo]

What type of PR is this?

Uncomment one (or more) /kind <> lines:

/kind bug

/kind cleanup

/kind documentation

/kind tests

/kind feature

Any specific area of the project related to this PR?

Uncomment one (or more) /area <> lines:

/area commands

/area pkg

/area events

What this PR does / why we need it:

The issue can be reproduced with the following test:

tests:
  - rule: DirectoryTraversalMonitoredFileRead
    name: test2
    runner: HostRunner
    before: "echo Hi"
    steps:
      - type: syscall
        name: open
        syscall: open
        args:
          pathname: "/etc/../etc/../etc/shadow"
          flags: 0
          mode: 0644
    after: "echo Bye"

It was crashing with:

panic: reflect: call of reflect.Value.SetInt on uint32 Value

After this fix it runs successfully:

2024-11-10T23:22:23.483+0100    info    root    /Users/jose.calvo/repos/event-generator/cmd/declarative/run/run.go:221  Starting test execution...  {"testName": "test2", "testIndex": 0}
2024-11-10T23:22:23.494+0100    info    root.runner.test.script /Users/jose.calvo/repos/event-generator/pkg/test/script/shell/shell.go:174  Script log line {"runnerType": "HostRunner", "testName": "test2", "testIndex": 0, "type": "stdout", "line": "Hi"}
2024-11-10T23:22:23.504+0100    debug   root.runner.test    /Users/jose.calvo/repos/event-generator/pkg/test/test/test.go:142   Executed test step  {"runnerType": "HostRunner", "testName": "test2", "testIndex": 0, "stepName": "open", "stepIndex": 0}
2024-11-10T23:22:23.510+0100    debug   root.runner.test    /Users/jose.calvo/repos/event-generator/pkg/test/test/test.go:187   Executed test step cleanup  {"runnerType": "HostRunner", "testName": "test2", "testIndex": 0, "stepName": "open", "stepIndex": 0}
2024-11-10T23:22:23.511+0100    info    root.runner.test.script /Users/jose.calvo/repos/event-generator/pkg/test/script/shell/shell.go:174  Script log line {"runnerType": "HostRunner", "testName": "test2", "testIndex": 0, "type": "stdout", "line": "Bye"}
2024-11-10T23:22:23.514+0100    info    root    /Users/jose.calvo/repos/event-generator/cmd/declarative/run/run.go:249  Test execution completed    {"testName": "test2", "testIndex": 0}

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

[ekoops]

Good catch! It looks good to me

[poiana]

LGTM label has been added.

Git tree hash: 5936cab66bbf055ef1be4ed8ca8bed6b7c87ab20

[alacuku]

/hold

[alacuku]

Hey @jacalvo, thanks for the fix! Can you have a look at the linter?

[alacuku]

/unhold

[poiana]

LGTM label has been added.

Git tree hash: 2147e67fb1f4e81d8aa9b8e92ee7c599fede48bb

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: alacuku, jacalvo

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