Danny White 476d4a5851 refactor(ui): drop redundant Button variant="default" props (#50161) ...

## What kind of change does this PR introduce?

Mechanical cleanup on top of the Button default-variant change (#50160).

## What is the current behavior?

Many callsites still pass `variant="default"` even though that is now
the component default.

## What is the new behavior?

Removes redundant static `variant="default"` from legacy `Button` and
`ButtonTooltip` callsites. Keeps explicit defaults where they document
the API:

- `button-default.tsx` and `button-sizes.tsx` demos
- `DocsButton`, which pins neutral styling at the wrapper boundary

## To test

Studio:

- [Auth → Rate
Limits](https://studio-staging-2s957kwc4-supabase.vercel.app/dashboard/project/_/auth/rate-limits):
dirty the form so Cancel appears; Cancel stays neutral, Save stays green
- [Project Settings → API
Keys](https://studio-staging-2s957kwc4-supabase.vercel.app/dashboard/project/_/settings/api-keys):
`DocsButton` in the header actions stays neutral

Design system:

- [Design system →
Button](https://design-system-git-dnywh-dc924ac1-supabase.vercel.app/design-system/docs/components/button):
`button-default` / `button-sizes` still show explicit default styling;
Primary (green) is restricted to the Primary section (and `asChild`)

WWW:

- [www → Brand
assets](https://zone-www-dot-com-git-dnywh-dc924ac1-supabase.vercel.app/brand-assets):
Download logo kit / Download button kit stay neutral

2026-09-11 17:05:26 +10:00

..

FileExplorerAndEditor.types.ts

…

FileExplorerAndEditor.utils.ts

Use CodeEditor in AIEditor (#47297)

2026-06-26 10:44:16 +08:00

FileExplorerAndEditorRow.tsx

…

index.tsx

refactor(ui): drop redundant Button variant="default" props (#50161)

2026-09-11 17:05:26 +10:00