Add finalizer for propagation policy

[whitewindmills]

What type of PR is this? /kind feature

What this PR does / why we need it: See https://github.com/karmada-io/karmada/pull/4743#discussion_r1560637648 Which issue(s) this PR fixes:

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[whitewindmills]

/cc @RainbowMango to take a look.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 38 lines in your changes are missing coverage. Please review.

Project coverage is 53.07%. Comparing base (fdad87e) to head (6f2770e).

Files	Patch %	Lines
pkg/detector/detector.go	0.00%	38 Missing :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #4836 +/- ## ========================================== - Coverage 53.11% 53.07% -0.05% ========================================== Files 250 250 Lines 20351 20369 +18 ========================================== Hits 10810 10810 - Misses 8824 8842 +18 Partials 717 717 ``` | [Flag](https://app.codecov.io/gh/karmada-io/karmada/pull/4836/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=karmada-io) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/karmada-io/karmada/pull/4836/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=karmada-io) | `53.07% <0.00%> (-0.05%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=karmada-io#carryforward-flags-in-the-pull-request-comment) to find out more.

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[whitewindmills]

/cc @RainbowMango @XiShanYongYe-Chang

[RainbowMango]

/assign

[RainbowMango]

LGTM @XiShanYongYe-Chang @chaunceyjiang Do you guys have any further comments?

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: RainbowMango

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