Part of #15192

Improves accessibility to Activity Log filter bar.

To test

Please, test using a real device with voice over enabled.

Filter bar

1. Go to Activity Log
2. Check that both the Date Range button and Activity Type button are accessible

Date Range

Z gesture:

1. Tap the Date Range button
2. Use the Z gesture (with two fingers), the screen should be dismisses

Selecting date:

1. Tap the Date Range button
2. Check that every date cell is read by Voice Over (the complete date)
3. Select a date range
4. Go to the header and make sure voice over read it's contents
5. Tap Done

Reset button:

1. Check that the voice over reads the reset button

Activity Type

Z gesture:

1. Tap the Activity Type button
2. Use the Z gesture (with two fingers), the screen should be dismisses

Selecting activities:

1. Tap the Activity Type button
2. Select one or more activity types
3. Tap Done

Reset button:

1. Check that the voice over reads the reset button

PR submission checklist:

• I have considered adding unit tests where possible.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.