fix(devtools): make panel height responsive for fullscreen view

[Dhavanesh24cs412]

Description

Fixes the responsive height issue for TanStack devtools panel in fullscreen view.

Problem

The devtools panel was hardcoded to 400px height, making it fixed and non-responsive to different screen sizes or fullscreen view.

Solution

• Changed hardcoded height to a calculated value based on viewport height
• Panel now scales responsively: 50% of viewport height
• Respects minimum (300px) and maximum (400px) constraints
• Works across different screen sizes and fullscreen scenarios

Type of Change

• Bug fix (non-breaking)
• New feature
• Breaking change

Testing

• Tested in development environment
• Panel resizes properly on different screen sizes
• Fullscreen mode works as expected
• Mobile view respects minimum height

Related Issue

Closes #320

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Latest commit: 4f50997

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[Dhavanesh24cs412]

This responsive height solution addresses the issue well. By replacing the hardcoded 400px with a calculated value based on viewport height, the devtools panel now adapts beautifully to fullscreen views. The 50% viewport-based approach is clean and maintains usability across all screen sizes.

[tolfi]

I wonder when this PR get merged, currently relying on removing the height in the inline style everytime:

[AlemTuzlak]

@Dhavanesh24cs412 @tolfi sorry but what does this solve exactly? there's a resize bar on top of the devtools where you can expand them and lower them to any height you like and it's persisted across sections, or am I misunderstanding the problem?