feat(command-bar): various improvements to the command bar

[thmsobrmlr]

Problem

Follow up to #17864 and #18355.

Changes

This PR:

• replaces the lemon modal with a custom one, without a transition
• handles entering command mode when replacing the input with ">"
• replaces the height attribute added to lemon skeleton by adding a the height to the default className that can be overwritten by setting in a custom className
• replaces default with named exports
• some smaller fixes

How did you test this code?

Clicking around

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[posthog-bot]

📸 UI snapshots have been updated

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[posthog-bot]

📸 UI snapshots have been updated

1 snapshot changes in total. 0 added, 1 modified, 0 deleted:

• chromium: 0 added, 1 modified, 0 deleted (diff for shard 1)
• webkit: 0 added, 0 modified, 0 deleted

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[posthog-bot]

📸 UI snapshots have been updated

1 snapshot changes in total. 0 added, 1 modified, 0 deleted:

• chromium: 0 added, 1 modified, 0 deleted (diff for shard 1)
• webkit: 0 added, 0 modified, 0 deleted

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[github-actions]

Size Change: -2.51 kB (0%)

Total Size: 2.01 MB

Filename	Size	Change
frontend/dist/toolbar.js	2.01 MB	-2.51 kB (0%)

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