KT-9388 Code completion inserts use-site annotation target with superfluous chars

#KT-9388 Fixed

idea/idea-completion/testData/handlers/keywords/UseSiteAnnotationTarget1.kt

@@ -0,0 +1,3 @@
+class C(@<caret> val p: String)
+
+// ELEMENT: get

idea/idea-completion/testData/handlers/keywords/UseSiteAnnotationTarget1.kt.after

@@ -0,0 +1,3 @@
+class C(@get:<caret> val p: String)
+
+// ELEMENT: get

idea/idea-completion/testData/handlers/keywords/UseSiteAnnotationTarget2.kt

@@ -0,0 +1,3 @@
+class C(@<caret>Ann var p: String)
+
+// ELEMENT: set

idea/idea-completion/testData/handlers/keywords/UseSiteAnnotationTarget2.kt.after

@@ -0,0 +1,3 @@
+class C(@set:<caret>Ann var p: String)
+
+// ELEMENT: set

idea/idea-completion/testData/handlers/keywords/UseSiteAnnotationTarget3.kt

@@ -0,0 +1,4 @@
+class C(@<caret>get:Ann var p: String)
+
+// ELEMENT: set
+// CHAR: '\t'

idea/idea-completion/testData/handlers/keywords/UseSiteAnnotationTarget3.kt.after

@@ -0,0 +1,4 @@
+class C(@set:<caret>Ann var p: String)
+
+// ELEMENT: set
+// CHAR: '\t'