Minor UI fixes

[svc-shorpo]

Minor tweaks and fixes:

• [AppNav] Use ScrollArea component to re-style scrollbars for consistency across platforms
• [AppNav] Show search inputs even if there's less than 1 saved search/dashboard (for styling and for better CMD+K discoverability)
• [AppNav] Tweak text and icon colors
• [Search Page] Add spacing between icon and text in "Zoom Out", "Zoom In" btns
• [Search Page] Fix Tags count text appearing on top of Details panel
• [Tags Popup] Open by clicking instead of by hover for 1) better ux 2) better accessibility
• [Tags Popup] Sort tags alphabetically, otherwise they rearrange constantly while using
• [Tags Popup] Align tags popup to bottom-left so it doesn't reposition when parent element changes size (like when adding filters in Alerts page)
• [Dashboard Page] Use Button instead of Badge for tags for better accessibility

[changeset-bot]

🦋 Changeset detected

Latest commit: 595ec18

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@hyperdx/app	Patch
@hyperdx/api	Patch

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