Closes #6851: 3.17 refactor regression: {wpr_imagedimensions=1} query string isnot added to home page while warmup after fresh install

[jeawhanlee]

Description

Fixes #6851

Documentation

User documentation

Imagedimension query argument is now added for home during activation, this initially prevent the home from having entries in DB

Technical documentation

In the 3.17 refactor we removed these lines and depended on the filter to apply this query arg here but the issue was that the warmup subscriber will not be loaded early enough for this callback to be fired, so in this PR we loaded the subscriber early enough to trigger the callback.

Type of change

• Bug fix (non-breaking change which fixes an issue).

New dependencies

None

Risks

None

Checklists

Feature validation

• I validated all the Acceptance Criteria. If possible, provide sreenshots or videos.
• I triggered all changed lines of code at least once without new errors/warnings/notices.

Documentation

• I prepared the user documentation for the feature/enhancement and shared it in the PR or the GitHub issue.
• The user documentation covers new/changed entry points (endpoints, WP hooks, configuration files, ...).
• I prepared the technical documentation if needed, and shared it in the PR or the GitHub issue.

Code style

• I wrote self-explanatory code about what it does.
• I named variables and functions explicitely.
• I did not introduce unecessary complexity.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00% (target: -0.10%)	❌ 0.00% (target: 50.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (cb76df6)	37542	14268	38.01%
Head commit (cb5fb17)	37546 (+4)	14268 (+0)	38.00% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#6853)	5	0	0.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

See your quality gate settings    Change summary preferences

_{Codacy stopped sending the deprecated coverage status on June 5th, 2024. Learn more}

[remyperona]

Question: What is the advantage of this solution instead of reverting to the previous working code?

[jeawhanlee]

@Tabrisrp We define this query before in 2 places, in the api client and also as a callback which didn't seem necessary but now we still have it defined once but just with the subscriber called early enough.

[hanna-meda]

Tested and confirmed as fixed on PR.