feat: show error message in form editor.

[alanlong9278]

Description

Sync diagnostics info with notification page in form editor, includes lg, lu and expression dianostics.

Task Item

closes #1699
closes #1715

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code refactor (non-breaking change which improve code quality, clean up, add tests, etc)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Doc update (document update)

Checklist

• I have added tests that prove my fix is effective or that my feature works
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have functionally tested my change

Screenshots

[a-b-r-o-w-n]

Left some minor feedback. I will do a functional test today.

[a-b-r-o-w-n]

Couple more things:

1. Need to conform to the Conventional PR style.
2. e2e tests are failing.

[a-b-r-o-w-n]

@alanlong9278 I think this is good to go. Can you test more scenarios today?

I did find a couple of things unrelated to this change: #1742 #1744

[github-actions]

Coverage decreased (-0.05%) to 40.308% when pulling c3fffd6 on julong/validation-message into 4180fed on master.

[alanlong9278]

@alanlong9278 I think this is good to go. Can you test more scenarios today?

I did find a couple of things unrelated to this change: #1742 #1744

I have tested different scenarios, it runs well.

[alanlong9278]

@a-b-r-o-w-n There are two items changed.

1. Delete the value judgment logic because it will raise error when value is null in ifCondition's condition field.

// if (!value) {
  //   if (hiddenErrMessage) {
  //     onValidate && onValidate();
  //   }
  //   return '';
  // }

2. Show error message + refer message in expression. The error message will be more detailed after @lei9444 's commit.