fix: honor cursor blink rate

[codebytere]

Description of Change

Closes #10668.

Ensures that WebPreferences honor the system cursor blink rate on creation.

cc @zcbenz @nornagon @MarshallOfSound

Checklist

• PR description included and stakeholders cc'd
• npm test passes
• relevant documentation is changed or added
• PR title follows semantic commit guidelines
• PR release notes describe the change in a way relevant to app developers, and are capitalized, punctuated, and past tense.

Release Notes

Notes: Fixed an issue where cursor blink rate was not honored.

[miniak]

Can you please implement it on Windows using GetCaretBlinkTime?

[miniak]

Or actually this seems better
https://cs.chromium.org/chromium/src/chrome/browser/renderer_preferences_util.cc?type=cs&q=GetCursorBlinkInterval&sq=package:chromium&g=0&l=123-125

#if defined(TOOLKIT_VIEWS)
  prefs->caret_blink_interval = views::Textfield::GetCaretBlinkInterval();
#endif

[ckerr]

LGTM. Thanks for the updates!

[miniak]

@codebytere can we use views::Textfield::GetCaretBlinkInterval();? it wraps GetCaretBlinkTime

[codebytere]

@miniak it does wrap that method, but it also wraps things for mac and so for clarity & maintainability i’d prefer we explicitly set all three ourselves since we’d need to call the linux one separately regardless.

Perhaps we could consider upstreaming the linux one into that call and then using that in the future?

[release-clerk]

Release Notes Persisted

Fixed an issue where cursor blink rate was not honored.

[trop]

I have automatically backported this PR to "7-0-x", please check out #20044

[trop]

I have automatically backported this PR to "5-0-x", please check out #20045

[trop]

I have automatically backported this PR to "6-0-x", please check out #20046