Do not propagate method deprecation through overrides since 1.9

Reports a declarations that are propagated by @Deprecated annotation that will lead to compilation error since 1.9.

Motivation types:

Implementation changes are required for implementation design/architectural reasons
Inconsistency in the design (things are done differently in different contexts)

More details: KT-47902: Do not propagate method deprecation through overrides

The quick-fix copies @Deprecated annotation from the parent declaration.

Example:

open class Base {
    @Deprecated("Don't use")
    open fun foo() {}
}

class Derived : Base() {
    override fun foo() {}
}

After the quick-fix is applied:

open class Base {
    @Deprecated("Don't use")
    open fun foo() {}
}

class Derived : Base() {
    @Deprecated("Don't use")
    override fun foo() {}
}

This inspection only reports if the Kotlin language level of the project or module is 1.6 or higher.

Inspection Details
Available in:	IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Plugin:	Kotlin, @snapshot@

Last modified: 13 July 2023