Escape default text arguments in suggestions database (#9010)

Changelog:
- fix: escape default text arguments in suggestions database

engine/runtime-compiler/src/main/scala/org/enso/compiler/context/SuggestionBuilder.scala

@@ -10,7 +10,6 @@ import org.enso.compiler.core.ir.{
   Expression,
   Function,
   IdentifiedLocation,
-  Literal,
   Location,
   Name,
   Type
@@ -575,7 +574,7 @@ final class SuggestionBuilder[A: IndexedSource](
                 reprType     = selfType.toString,
                 isSuspended  = suspended,
                 hasDefault   = defaultValue.isDefined,
-                defaultValue = defaultValue.flatMap(buildDefaultValue)
+                defaultValue = defaultValue.map(buildDefaultValue)
               )
               go(vtail, targs, acc :+ thisArg)
             }
@@ -640,7 +639,7 @@ final class SuggestionBuilder[A: IndexedSource](
       reprType     = buildTypeArgumentName(targ),
       isSuspended  = varg.suspended,
       hasDefault   = varg.defaultValue.isDefined,
-      defaultValue = varg.defaultValue.flatMap(buildDefaultValue),
+      defaultValue = varg.defaultValue.map(buildDefaultValue),
       tagValues    = buildTagValues(targ)
     )
 
@@ -712,7 +711,7 @@ final class SuggestionBuilder[A: IndexedSource](
           reprType     = Any,
           isSuspended  = arg.suspended,
           hasDefault   = arg.defaultValue.isDefined,
-          defaultValue = arg.defaultValue.flatMap(buildDefaultValue)
+          defaultValue = arg.defaultValue.map(buildDefaultValue)
         )
     }
   }
@@ -730,13 +729,11 @@ final class SuggestionBuilder[A: IndexedSource](
     * @param expr the argument expression
     * @return the argument default value
     */
-  private def buildDefaultValue(expr: IR): Option[String] =
+  private def buildDefaultValue(expr: IR): String =
     expr match {
-      case Literal.Number(_, value, _, _, _) => Some(value)
-      case Literal.Text(text, _, _, _)       => Some(text)
       case Application.Prefix(name, path, _, _, _, _) =>
-        Some(path.map(_.value.showCode()).mkString(".") + "." + name.showCode())
-      case other => Some(other.showCode())
+        path.map(_.value.showCode()).mkString(".") + "." + name.showCode()
+      case other => other.showCode()
     }
 
   /** Build scope from the location. */

engine/runtime-parser/src/main/scala/org/enso/compiler/core/ir/Literal.scala

@@ -220,7 +220,7 @@ object Literal {
     /** @inheritdoc */
     override def toString: String =
       s"""
-         |Literal.String(
+         |Literal.Text(
          |text = $text,
          |location = $location,
          |passData = ${this.showPassData},

engine/runtime/src/test/scala/org/enso/compiler/test/context/SuggestionBuilderTest.scala

@@ -381,7 +381,7 @@ class SuggestionBuilderTest extends AnyWordSpecLike with Matchers {
 
     "build method with default arguments" in {
 
-      val code   = """foo (a = 0) = a + 1"""
+      val code   = """foo (a = 0) (b = "bar") (c = x.y) = a + b + c"""
       val module = code.preprocessModule
 
       build(code, module) shouldEqual Tree.Root(
@@ -394,7 +394,23 @@ class SuggestionBuilderTest extends AnyWordSpecLike with Matchers {
               name       = "foo",
               arguments = Seq(
                 Suggestion
-                  .Argument("a", SuggestionBuilder.Any, false, true, Some("0"))
+                  .Argument("a", SuggestionBuilder.Any, false, true, Some("0")),
+                Suggestion
+                  .Argument(
+                    "b",
+                    SuggestionBuilder.Any,
+                    false,
+                    true,
+                    Some("\"bar\"")
+                  ),
+                Suggestion
+                  .Argument(
+                    "c",
+                    SuggestionBuilder.Any,
+                    false,
+                    true,
+                    Some("x.y")
+                  )
               ),
               selfType      = "Unnamed.Test",
               returnType    = SuggestionBuilder.Any,