fix(inspect): ensure non-compact output when object literal has newline in entry text (#18366)

Fixes `Deno.inspect` to make an object literal non-compact when an entry
has multiple lines in it.

cli/tests/integration/run_tests.rs

@@ -3261,8 +3261,8 @@ itest!(unhandled_rejection_dynamic_import2 {
 });
 
 itest!(nested_error {
-  args: "run run/nested_error.ts",
-  output: "run/nested_error.ts.out",
+  args: "run run/nested_error/main.ts",
+  output: "run/nested_error/main.ts.out",
   exit_code: 1,
 });
 

cli/tests/testdata/run/nested_error.ts.out

@@ -1,4 +0,0 @@
-error: Uncaught {
-  foo: Error
-    at file:///[WILDCARD]testdata/run/nested_error.ts:2:8
-}

cli/tests/testdata/run/nested_error/main.ts.out

@@ -0,0 +1,4 @@
+error: Uncaught {
+  foo: Error
+    at file:///[WILDCARD]/main.ts:2:8
+}