Fix #3651: [RTL] High-fi rotation animation for icon in Topic lesson and Hints and Solution

[veena14cs]

Explanation

This PR fixes #3651. This PR fixes expand/collapse icon for RTL.

Test with new RTL code passes as expected.

Test without new RTL codes fails as expected.

Checklist

• The PR title starts with "Fix #bugnum: ", followed by a short, clear summary of the changes. (If this PR fixes part of an issue, prefix the title with "Fix part of #bugnum: ...".)
• The PR explanation includes the words "Fixes #bugnum: ..." (or "Fixes part of #bugnum" if the PR only partially fixes an issue).
• The PR follows the style guide.
• The PR does not contain any unnecessary auto-generated code from Android Studio.
• The PR is made from a branch that's not called "develop".
• The PR is made from a branch that is up-to-date with "develop".
• The PR's branch is based on "develop" and not on any other branch.
• The PR is assigned to an appropriate reviewer in both the Assignees and the Reviewers sections.

[veena14cs]

Thanks, @veena14cs

I haven't reviewed it in detail, looks like few changes. I will check the tests tomorrow.

Thanks @anandwana001 I have addressed your comments PTAL.

[veena14cs]

@veena14cs Can you please self review this PR? Looks like there as some unwanted changes also the branch is not up-to-date with develop.

Fixed unwanted changes PTAL.

[rt4914]

Suggested nit changes. Otherwise LGTM

[oppiabot]

Assigning @BenHenning for code owner reviews. Thanks!

[anandwana001]

LGTM

[BenHenning]

Hi. Will need to look at this tomorrow.

[BenHenning]

Thanks @veena14cs. I'm glad we were able to effectively test this. PR LGTM!