[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/getOrBuildFir/expressions/assignment.txt

@@ -8,7 +8,7 @@ String()
 FIR FILE:
 FILE: [ResolvedTo(IMPORTS)] assignment.kts
     context(<script>@R|kotlin/script/templates/standard/ScriptTemplateWithArgs|)
-    SCRIPT: [ResolvedTo(BODY_RESOLVE)]
+    SCRIPT: [ResolvedTo(BODY_RESOLVE)] <script-assignment.kts>
         [ResolvedTo(BODY_RESOLVE)] lval args: R|kotlin/Array<kotlin/String>|
 
         public final [ResolvedTo(STATUS)] class Builder : R|kotlin/Any| {
@@ -52,4 +52,4 @@ FILE: [ResolvedTo(IMPORTS)] assignment.kts
             public [ResolvedTo(IMPLICIT_TYPES_BODY_RESOLVE)] get(): R|Builder|
 
         R|/builder|.R|/Builder.execute|()
-        R|/builder|.R|/Builder.version| = String()
+        R|/builder|.R|/Builder.version| = String()