[tests] Refactor AbstractReferenceResolveTest. Part 3

Add possibility to `ExpressionMarkerProvider` to get all the carets
from the file.
Use it in `AbstractReferenceResolveTest`, but not check all the carets
yet.

Required for KT-65152 and KT-62695

analysis/analysis-test-framework/tests/org/jetbrains/kotlin/analysis/test/framework/services/ExpressionMarkersSourceFilePreprocessor.kt

@@ -99,6 +99,10 @@ class ExpressionMarkerProvider : TestService {
             }
     }
 
+    fun getAllCaretsPositions(file: PsiFile): List<Int> {
+        return carets.getAllCaretsOffsets(file.name)
+    }
+
     fun getSelectedRangeOrNull(file: PsiFile): TextRange? = selected[file.name]
     fun getSelectedRange(file: PsiFile): TextRange = getSelectedRangeOrNull(file) ?: error("No selected expression found in file")
 
@@ -265,6 +269,10 @@ private class CaretProvider {
         return cartsInFile.getCaretOffsetByTag(caretTag)
     }
 
+    fun getAllCaretsOffsets(filename: String): List<Int> {
+        return caretToFile[filename]?.getAllCaretsOffsets().orEmpty()
+    }
+
     fun addCaret(filename: String, caretTag: String?, caretOffset: Int) {
         val cartsInFile = caretToFile.getOrPut(filename) { CaretsInFile() }
         cartsInFile.addCaret(caretTag, caretOffset)
@@ -277,6 +285,10 @@ private class CaretProvider {
             return carets[tag.orEmpty()]
         }
 
+        fun getAllCaretsOffsets(): List<Int> {
+            return carets.values.toList()
+        }
+
         fun addCaret(caretTag: String?, caretOffset: Int) {
             carets[caretTag.orEmpty()] = caretOffset
         }