[FIR] FirRenderer: render name for scripts

A script name is important information, so it is better to render it.
This also will fix the inconsistency with redundant space after 'SCRIPT:'.

analysis/low-level-api-fir/testData/dependentCopy/scriptFunction.context.txt

@@ -33,7 +33,7 @@ Tower Data Context:
     Element 9
         Context receivers:
             FirScriptSymbol context(<script>@R|kotlin/script/templates/standard/ScriptTemplateWithArgs|)
-            SCRIPT:
+            SCRIPT: <script-scriptFunction.kts>
                 lval args: R|kotlin/Array<kotlin/String>|
 
                 public? final? class ScriptClass : R|kotlin/Any|