Minor: Do not place line markers in code fragments and in non-Kotlin files

idea/src/org/jetbrains/kotlin/idea/highlighter/KotlinSuspendCallLineMarkerProvider.kt

@@ -55,6 +55,12 @@ class KotlinSuspendCallLineMarkerProvider : LineMarkerProvider {
             ProgressManager.checkCanceled()
 
             if (element !is KtExpression) continue
+
+            val containingFile = element.containingFile
+            if (containingFile !is KtFile || containingFile is KtCodeFragment) {
+                continue
+            }
+
             val lineNumber = element.getLineNumber()
             if (lineNumber in markedLineNumbers) continue
             if (!element.hasSuspendCalls()) continue

idea/src/org/jetbrains/kotlin/idea/highlighter/KotlinSuspendCallLineMarkerProvider.kt.172

@@ -56,6 +56,12 @@ class KotlinSuspendCallLineMarkerProvider : LineMarkerProvider {
             ProgressManager.checkCanceled()
 
             if (element !is KtExpression) continue
+
+            val containingFile = element.containingFile
+            if (containingFile !is KtFile || containingFile is KtCodeFragment) {
+                continue
+            }
+
             val lineNumber = element.getLineNumber()
             if (lineNumber in markedLineNumbers) continue
             if (!element.hasSuspendCalls()) continue