Fixes #4513 : Dark mode implementation - Dialogs, Status Bar

[MohitGupta121]

Explanation

Fixes #4513 : Dark mode implementation - Dialogs, Status Bar

Essential Checklist

• The PR title and explanation each start with "Fix #bugnum: " (If this PR fixes part of an issue, prefix the title with "Fix part of #bugnum: ...".)
• Any changes to scripts/assets files have their rationale included in the PR explanation.
• The PR follows the style guide.
• The PR does not contain any unnecessary code changes from Android Studio (reference).
• The PR is made from a branch that's not called "develop" and is up-to-date with "develop".
• The PR is assigned to the appropriate reviewers (reference).

For UI-specific PRs only

Cellular Data Dialog

Bottom Sheet Options Menu

Profile Picture Edit Dialog

Reveal Solution Dialog

Full Screen Dialogs

Concept Card Dialog

Hint and Solutions Dialog

If your PR includes UI-related changes, then:

• Add screenshots for portrait/landscape for both a tablet & phone of the before & after UI changes
• For the screenshots above, include both English and pseudo-localized (RTL) screenshots (see RTL guide)
• Add a video showing the full UX flow with a screen reader enabled (see accessibility guide)
• Add a screenshot demonstrating that you ran affected Espresso tests locally & that they're passing

[github-actions]

Thanks for submitting this pull request! Some main reviewers
have taken time off for the next few weeks, so it may take a
little while before we can look at this PR. We appreciate your
patience while some of our team members recharge. We'll be fully
returning on 10 January 2022.

[MohitGupta121]

@rt4914 Can you PTAL on this PR.

[rt4914]

LGTM, Suggested minor fixes.

[MohitGupta121]

@rt4914 Done the review changes. PTAL.
Thanks.