Infer type of delegated readonly property from the map value type.

#KT-7295 Fixed

#KT-9188

IO deprecations: String.separatorsToSystem() --> File.separatorsToSystem() KT-9534, FileTreeWalk.filter --> FileTreeWalk.treeFilter KT-8517

StdLib generators: Add some infix extensions for DSL, remove unneeded import, simplify declarations.

Effectively drop publicField and introduce JvmField (which has the same effect for now)
Implement frontend checks for @JvmField
Replace publicField -> JvmField in test data

- update Range and related classes

Cleaning jar cache after build in gradle plugin, fixes KT-9440. Some refactorings on the way to fix.

External annotations will only be considered in the IDE for additional
inspections based on more precise types in Java libraries

#KT-6657