Paste inside indented .trimIndent() raw string: respect indentation (KT-31810)

#KT-31810 Fixed

idea/testData/copyPaste/plainTextLiteral/TrimIndent.expected.kt

@@ -0,0 +1,9 @@
+fun test() = doTest("""
+    def foo(a)
+        a ? 0 : 1
+    end
+""".trimIndent())
+
+fun doTest(rubyCode: String) {
+    // some code here
+}

idea/testData/copyPaste/plainTextLiteral/TrimIndent.kt

@@ -0,0 +1,7 @@
+fun test() = doTest("""
+    <caret>
+""".trimIndent())
+
+fun doTest(rubyCode: String) {
+    // some code here
+}

idea/testData/copyPaste/plainTextLiteral/TrimIndent.txt

@@ -0,0 +1,3 @@
+def foo(a)
+    a ? 0 : 1
+end

idea/testData/copyPaste/plainTextLiteral/TrimIndent2.expected.kt

@@ -0,0 +1,9 @@
+fun test() = doTest("""
+def foo(a)
+    a ? 0 : 1
+end
+""".trimIndent())
+
+fun doTest(rubyCode: String) {
+    // some code here
+}

idea/testData/copyPaste/plainTextLiteral/TrimIndent2.kt

@@ -0,0 +1,7 @@
+fun test() = doTest("""
+<caret>
+""".trimIndent())
+
+fun doTest(rubyCode: String) {
+    // some code here
+}

idea/testData/copyPaste/plainTextLiteral/TrimIndent2.txt

@@ -0,0 +1,3 @@
+def foo(a)
+    a ? 0 : 1
+end