fix: the TimePicker overlay the AdhocFilter

[zhaoyongjie]

SUMMARY

When the GENERIC_CHART_AXES is enabled, the DateFilter in the modal has overlaid the AdhocFilter. This PR intends to fix it.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

After

Before

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #22234 (2a8c036) into master (22fab5e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #22234   +/-   ##
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  Coverage   66.85%   66.85%           
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  Files        1841     1841           
  Lines       70197    70197           
  Branches     7662     7662           
=======================================
  Hits        46927    46927           
  Misses      21296    21296           
  Partials     1974     1974           

Flag	Coverage Δ
javascript	53.67% <ø> (ø)

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Impacted Files	Coverage Δ
...nts/controls/DateFilterControl/DateFilterLabel.tsx	58.13% <ø> (ø)

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[villebro]

LGTM. We may need to start documenting or controlling these z-indexes more thoroughly at some point.

[zhaoyongjie]

@michael-s-molina @geido the Modal and Popover components might need to define an appropriate/documenting zIndex property in them.