Upgrade prettier

[brophdawg11]

Trying to upgrade prettier to support import ... with syntax - we had to ignore an RSC integration file in 78b374b because it was breaking the format workflow.

Upgrading was simple, and it causes bunch of changes which seem harmless. I did have to set trailingComma:es5 to get the minimal set of changes (~100 files instead of 400-500 with the new default all option). We can do that in this PR if we want or do it in a separate PR.

However, the latest version of prettier now fails with a new syntax error which I think we would need to add "type": "module" to package.json to support - and that feels like a bigger undertaking. Our other option is to add this file to the .eslintignore file but that feels risky since we may miss syntax errors in there?

packages/react-router-dev/vite/static/refresh-utils.cjs
[error] packages/react-router-dev/vite/static/refresh-utils.cjs: SyntaxError: import.meta may appear only with 'sourceType: "module"' (160:1)
[error]   158 | window.__reactRouterRouteModuleUpdates = new Map();
[error]   159 |
[error] > 160 | import.meta.hot.on("react-router:hmr", async ({ route }) => {
[error]       | ^
[error]   161 |   window.__reactRouterClearCriticalCss();
[error]   162 |
[error]   163 |   if (route) {

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