minor update-lack on style change in EditDialog #2204

Details for the issue

when you change style and EditDialog Value is null it doesn’t change

when EditDialog Value isn’t null, it works fine

after swapping to table (filled) and back to empty SQL-Tab everthing is fine)

works both ways the same: dark to light and light to dark

Useful extra information

The info below often helps, please fill it out if you're able to. :)

What operating system are you using?

• [x ] Windows: ( _version:_7 ___ )

What is your DB4S version?

• [ x] 3.12.0-(alpha or betas)

Did you also

• Try out the latest nightly version: https://github.com/sqlitebrowser/sqlitebrowser#nightly-builds
• [x ] Search for an existing similar issue: https://github.com/sqlitebrowser/sqlitebrowser/issues?utf8=%E2%9C%93&q=is%3Aissue%20