Fixes part of #3251: Added hint to numeric input

[rt4914]

Explanation

Fixes part of #3251: Added hint to numeric input

Before this PR the tests were failing if we enable the AccessibilityChecks.

Also a total of 15 tests cases were failing before this PR but now its 9 which are because of DragAndDropInteraction, which will get fixed in #2323

NOTE to REVIEWER: You cannot run this PR as it needs code from #3246 too which we cannot merge until and unless this and other similar PRs get merged.

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.
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[BenHenning]

Thanks @rt4914. Can you also add a test to verify that the correct hint is set?

[rt4914]

New added test is passing on espresso.

[BenHenning]

Nice test. Thanks @rt4914!