KT-56941 Gradle KTS navigation: go to declaration (Java) doesn't work

Case:
```
options.incrementalAfterFailure = false    // assignment operator  (a)
options.incrementalAfterFailure.set(false) // equivalent (without) (b)

// (a) works thanks to AssignResolutionAltererExtension
// 'incrementalAfterFailure' is a synthetic Java property
// i.e. getIncrementalAfterFailure()

// Navigation to 'incrementalAfterFailure' (a) doesn't work.
```

By navigation, we mean opening declaration sources. The reason of the
issue lied in sources absence (inability to find them).

In general, sources are available via declaration descriptor.
To find one for a property, one needs to understand expression
kind: read/write/both. Hence, the choice of a getter/setter/both.
Since `=` operator is interpreted as a write type expression, a setter
was searched. Missing one resulted in corrupted navigation.

As a fix we provide getter for the missing setter case.

^KT-56941 fixed

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/references/FirSimpleNameReference.kt

@@ -51,8 +51,12 @@ internal class KtFirSimpleNameReference(
         referenceTargetSymbols.flatMap { symbol ->
             when (symbol) {
                 is KtFirSyntheticJavaPropertySymbol ->
-                    if (isRead) listOfNotNull(symbol.javaGetterSymbol.psi)
-                    else listOfNotNull(symbol.javaSetterSymbol?.psi)
+                    if (isRead) {
+                        listOfNotNull(symbol.javaGetterSymbol.psi)
+                    } else {
+                        if (symbol.javaSetterSymbol == null) listOfNotNull(symbol.javaGetterSymbol.psi)
+                        else listOfNotNull(symbol.javaSetterSymbol?.psi)
+                    }
                 else -> listOfNotNull(symbol.psi)
             }
         }

analysis/kt-references/kt-references-fe10/src/org/jetbrains/kotlin/references/fe10/Fe10SyntheticPropertyAccessorReference.kt

@@ -32,7 +32,8 @@ class Fe10SyntheticPropertyAccessorReference(
                 if (getter) {
                     result.add(descriptor.getMethod)
                 } else {
-                    result.addIfNotNull(descriptor.setMethod)
+                    if (descriptor.setMethod == null) result.addIfNotNull(descriptor.getMethod)
+                    else result.addIfNotNull(descriptor.setMethod)
                 }
             }
         }