feat: enforce recreating (force updating) objects when operator versi…

[arkbriar]

…on changes

What's changed and what's your intention?

PLEASE DO NOT LEAVE THIS EMPTY !!!

Please explain IN DETAIL what the changes are in this PR and why they are needed:

• Before the change, the EnableForceUpdate feature gate won't work even if there's a conflict when the object is created by the same version of operator. Though the feature was intended to address inconsistency after upgrading operator, it's now getting confusing as feat: turn the feature gate EnableForceUpdate on by default #727 is merged.
• The PR changes the behaviour to let operator automatically address inconsistency problems on operator version changes, and do force updates when the feature gate is on.

Checklist

• I have written the necessary docs and comments
• I have added necessary unit tests and integration tests

Refer to a related PR or issue link (optional)

[arkbriar]

A patch release will be created once the PR's merged.

[xuhui-lu]

LGTM!

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 55.42%. Comparing base (df47bd0) to head (97620f2).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/manager/risingwave_controller_manager_impl.go	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #736      +/-   ##
==========================================
- Coverage   55.43%   55.42%   -0.02%     
==========================================
  Files          40       40              
  Lines        6757     6759       +2     
==========================================
  Hits         3746     3746              
- Misses       2884     2886       +2     
  Partials      127      127              

Flag	Coverage Δ
unittests	55.42% <0.00%> (-0.02%)	⬇️

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