Update React to 19 (#1360)

## Launch Checklist

This updates React to 19.
It removes the unmaintained `react-icon-base` package and uses icons
from the existing one (also removes the svgs).
It also updates the other packages so that everything should be up to
date.

 - [x] Briefly describe the changes in this PR.

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

src/components/IconMissing.tsx

@@ -1,11 +1,9 @@
-import React from 'react'
+import React, { type CSSProperties } from 'react'
 import {MdPriorityHigh} from 'react-icons/md'
 
-
-export default class IconMissing extends React.Component {
-  render() {
-    return (
-      <MdPriorityHigh {...this.props} />
-    )
-  }
+const IconMissing: React.FC<{style: CSSProperties | undefined}> = (props) => {
+  return (
+    <MdPriorityHigh {...props} />
+  )
 }
+export default IconMissing;