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/Block.tsx

@@ -88,7 +88,7 @@ export default class Block extends React.Component<BlockProps, BlockState> {
       <div className="maputnik-input-block-action">
         {this.props.action}
       </div>
-      <div className="maputnik-input-block-content" ref={el => this._blockEl = el}>
+      <div className="maputnik-input-block-content" ref={el => {this._blockEl = el}}>
         {this.props.children}
       </div>
       {this.props.fieldSpec &&