Brody/port callout install tab changes

[beklapko]

Summary

There are three main changes in this PR but they're spread across a lot of docs.

1. This tooltip was removed (the callout linked to a page that's in the old docs but not the new docs, and didn't seem critical to me to have right now).

import IntegrationInstallTooltip from '/snippets/javascript-integrations/integration-install-tooltip.mdx';

<IntegrationInstallTooltip/>

2. Installation code blocks like this didn't migrate so well.

<Npm2Yarn>
  @arcjet/redact
</Npm2Yarn>

For now, I've replaced these with code groups (below is just an example, each code group is different based on the library getting installed)

<CodeGroup>
```bash npm
npm install @arcjet/redact
```
```bash yarn
yarn add @arcjet/redact
```
```bash pnpm
pnpm add @arcjet/redact
```
</CodeGroup>

There is probably a smarter/better long term way to do this with snippets but this was doable in the short term to fix the missing example/broken rendering.

3. Some tooltips and snippets got put in these {=mdx} blocks:

```{=mdx}
<Warning>
**Compatibility**

This feature is currently in beta.
</Warning>
```

So I removed the opening and closing "tags" which fixes the rendering issues.

Unresolved issue

This snippet shows up in several places:

<ChatModelTabs customVarName="llm" />

It was enclosed with {=mdx} and the triple backticks which caused it to be rendered like this in prod:

I removed the enclosing {=mdx} so it doesn't get rendered at all, but this doesn't fix the issue entirely. That snippet, from what I can tell, should render out something like this section in the old JS docs: https://js.langchain.com/docs/integrations/retrievers/exa/#use-within-a-chain.

It'd take more time and research to see if we can actually recreate that functionality here or not, which this PR does not address.

Testing

I spot checked a few instances of each of these changes locally but I did not verify every change in every file.

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[beklapko]

Related but closed PR just for reference: #381.

I created this PR to fix additional stuff but also to start fresh on main.

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