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/InputJson.tsx

@@ -173,7 +173,7 @@ class InputJsonInternal extends React.Component<InputJsonInternalProps, InputJso
       </div>
       <div
         className={classnames("codemirror-container", this.props.className)}
-        ref={(el) => this._el = el}
+        ref={(el) => {this._el = el}}
         style={style}
       />
     </div>