fix(devtools): apply styles to explorer component

[michelleoj]

@ardeora turns out i missed some styles in the devtools so i'm adding a fix here. also updating the example to make a request so that you can see the expanders when selecting a query row

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Sandbox	Source
@tanstack/query-example-angular-basic	Configuration
@tanstack/query-example-react-basic-typescript	Configuration
@tanstack/query-example-solid-basic-typescript	Configuration
@tanstack/query-example-svelte-basic	Configuration
@tanstack/query-example-vue-basic	Configuration

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Codecov Report

Merging #7090 (db2358a) into main (bf92176) will decrease coverage by 0.11%.
The diff coverage is 0.00%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7090      +/-   ##
==========================================
- Coverage   41.50%   41.39%   -0.11%     
==========================================
  Files         184      184              
  Lines        7308     7327      +19     
  Branches     1511     1529      +18     
==========================================
  Hits         3033     3033              
- Misses       3876     3889      +13     
- Partials      399      405       +6     

Components	Coverage Δ
@tanstack/angular-query-devtools-experimental	∅ <ø> (∅)
@tanstack/angular-query-experimental	86.46% <ø> (ø)
@tanstack/eslint-plugin-query	85.11% <ø> (ø)
@tanstack/query-async-storage-persister	49.20% <ø> (ø)
@tanstack/query-broadcast-client-experimental	∅ <ø> (∅)
@tanstack/query-codemods	0.00% <ø> (ø)
@tanstack/query-core	93.25% <ø> (ø)
@tanstack/query-devtools	3.94% <0.00%> (-0.05%)	⬇️
@tanstack/query-persist-client-core	57.73% <ø> (ø)
@tanstack/query-sync-storage-persister	82.50% <ø> (ø)
@tanstack/react-query	92.77% <ø> (ø)
@tanstack/react-query-devtools	10.71% <ø> (ø)
@tanstack/react-query-next-experimental	∅ <ø> (∅)
@tanstack/react-query-persist-client	100.00% <ø> (ø)
@tanstack/solid-query	82.26% <ø> (ø)
@tanstack/solid-query-devtools	∅ <ø> (∅)
@tanstack/solid-query-persist-client	100.00% <ø> (ø)
@tanstack/svelte-query	62.68% <ø> (ø)
@tanstack/svelte-query-devtools	∅ <ø> (∅)
@tanstack/svelte-query-persist-client	100.00% <ø> (ø)
@tanstack/vue-query	70.81% <ø> (ø)
@tanstack/vue-query-devtools	∅ <ø> (∅)