Style: Larger Node Text, More Sidebar Alignment (#7223)

## Summary

See what it looks like. How it feels. What do you think?

- Also was able to unify down to a single SearchBox component.

## Changes

- Bigger widget / slot labels
- Smaller header text
- Unified Searchboxes across sidebar tabs

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7223-Style-prototype-with-larger-node-text-2c36d73d365081f8a371c86f178fa1ff)
by [Unito](https://www.unito.io)

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Co-authored-by: github-actions <github-actions@github.com>

src/components/widget/SampleModelSelector.vue

@@ -140,8 +140,8 @@ import CardBottom from '@/components/card/CardBottom.vue'
 import CardContainer from '@/components/card/CardContainer.vue'
 import CardTop from '@/components/card/CardTop.vue'
 import SquareChip from '@/components/chip/SquareChip.vue'
+import SearchBox from '@/components/common/SearchBox.vue'
 import MultiSelect from '@/components/input/MultiSelect.vue'
-import SearchBox from '@/components/input/SearchBox.vue'
 import SingleSelect from '@/components/input/SingleSelect.vue'
 import BaseModalLayout from '@/components/widget/layout/BaseModalLayout.vue'
 import LeftSidePanel from '@/components/widget/panel/LeftSidePanel.vue'