Fix policy evaluation not happening upon creation or update of individual components

[fupgang]

Description

Fixes #4373 as suggested in the issue.

Addressed Issue

4373

Additional Details

The test PolicyEvaluationTaskTest does not exactly check the fix. But I found it valuable since there seems to be no test case yet for PolicyEvaluationTask. I used it to study the behavior, it asserts another aspect.

Checklist

• [x] I have read and understand the contributing guidelines
• [ ] This PR fixes a defect, and I have provided tests to verify that the fix is effective
• [ ] This PR implements an enhancement, and I have provided tests to verify that it works as intended
• [ ] This PR introduces changes to the database model, and I have added corresponding update logic
• [ ] This PR introduces new or alters existing behavior, and I have updated the documentation accordingly

[codacy-production[bot]]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
:white_check_mark: +0.08% (target: -1.00%)	:white_check_mark: 100.00% (target: 70.00%)

Coverage variation details

| | Coverable lines | Covered lines | Coverage | | ------------- | ------------- | ------------- | ------------- | | Common ancestor commit (3c265ed6e8880fde6c51302f8c54a04273276269) | 22579 | 17852 | 79.06% | | | Head commit (dc48389dc4fe9b261dd74f86decd672be962fb5f) | 22579 (+0) | 17871 (+19) | 79.15% (**+0.08%**) | **Coverage variation** is the difference between the coverage for the head and common ancestor commits of the pull request branch: ` - `

Diff coverage details

| | Coverable lines | Covered lines | Diff coverage | | ------------- | ------------- | ------------- | ------------- | | Pull request (#4374) | 2 | 2 | **100.00%** | **Diff coverage** is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: `/ * 100%`

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