Theme Editor: find/replace bar improvements:

- always use editor selection to search if `Ctrl+F` is pressed
- keep find/replace bar open if switching to another editor
- mark matches when switching to another editor

flatlaf-theme-editor/build.gradle.kts

@@ -25,7 +25,6 @@ dependencies {
 	implementation( "com.miglayout:miglayout-swing:5.3" )
 	implementation( "com.fifesoft:rsyntaxtextarea:3.1.4" )
 	implementation( "com.fifesoft:autocomplete:3.1.3" )
-	implementation( "com.fifesoft:rstaui:3.1.3" )
 }
 
 tasks {