Fix false positive "Unused import directive" for imports under several alias

#KT-30949 Fixed

idea/testData/editor/optimizeImports/common/ConflictWithAlias.dependency.kt

@@ -0,0 +1 @@
+const val name = 42

idea/testData/editor/optimizeImports/common/ConflictWithAlias.kt

@@ -0,0 +1,4 @@
+import name
+import name as names
+
+val a = name

idea/testData/editor/optimizeImports/common/ConflictWithAlias.kt.after

@@ -0,0 +1,4 @@
+import name
+import name as names
+
+val a = name

idea/testData/editor/optimizeImports/common/ConflictWithAlias2.dependency.kt

@@ -0,0 +1,5 @@
+package duration
+
+val Int.hours: Int get() = TODO()
+val Int.minutes: Int get() = TODO()
+val Int.seconds: Int get() = TODO()

idea/testData/editor/optimizeImports/common/ConflictWithAlias2.kt

@@ -0,0 +1,11 @@
+import duration.*
+import duration.hours as hour
+import duration.minutes as minute
+import duration.minutes as minutes
+import duration.seconds as second
+import duration.seconds as seconds
+
+fun main() {
+    val totalDuration = 1.hour - 30.minutes + 1.second
+    println(totalDuration)
+}

idea/testData/editor/optimizeImports/common/ConflictWithAlias2.kt.after

@@ -0,0 +1,8 @@
+import duration.minutes
+import duration.hours as hour
+import duration.seconds as second
+
+fun main() {
+    val totalDuration = 1.hour - 30.minutes + 1.second
+    println(totalDuration)
+}

idea/testData/editor/optimizeImports/common/ConflictWithAlias2.kt.log

@@ -0,0 +1,13 @@
+Additional checking of reference Getter: hour
+Additional checking of reference KtSimpleNameReference: hour
+Changed resolve of KtSimpleNameReference: hour
+Additional checking of reference Getter: second
+Additional checking of reference KtSimpleNameReference: second
+Changed resolve of KtSimpleNameReference: second
+Trying to build import list again with import rules: +duration.hours as hour, +duration.seconds as second
+Additional checking of reference Getter: hour
+Additional checking of reference KtSimpleNameReference: hour
+Changed resolve of KtSimpleNameReference: hour
+Additional checking of reference Getter: second
+Additional checking of reference KtSimpleNameReference: second
+Changed resolve of KtSimpleNameReference: second