Handle undefined target in onBlur and onFocus handlers

[heath-freenome]

There are some instances where the onBlur and onFocus handlers are receiving an undefined target, causing the following type error:

Cannot read properties of undefined (reading 'value')

• Updated all of the onBlur() and onFocus() handlers in all libraries to fix this
• Updated the CHANGELOG.md accordingly

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Checklist

• I'm updating documentation
  • I've checked the rendering of the Markdown text I've added
• I'm adding or updating code
  • I've added and/or updated tests. I've run npm run test:update to update snapshots, if needed.
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[nickgros]

It would be great to know what causes this to happen. I am a bit concerned about passing false to these functions when target is null, but it will probably be ok.

[heath-freenome]

It would be great to know what causes this to happen. I am a bit concerned about passing false to these functions when target is null, but it will probably be ok.

It really only seems to be an issue with the SelectWidget on semantic-ui but I'm not taking any changes