test(extract): bind the URL-builder language-gate test to a real URL shape

The fixture returned "/etc/myapp/conf.d", which is_filesystem_path() rejects
before is_rest_path() is consulted, so the value was never classified as a URL
and never recorded as a builder -- with or without the language gate. The test
passed identically with the gate removed, so it certified nothing.

"/srv/" is not one of the ten filesystem prefixes, so the value is URL-shaped
and only the JS/TS/TSX gate prevents it being recorded for C.

Verified by revert-check: with the gate removed the test now FAILS at
tests/test_extraction.c:3455; with the gate restored it passes.

Follow-up to DeusData#1010. The gate implementation is unchanged and is the author's.

Co-authored-by: Charles Queiroz <fcqueiroz@liquibase.com>
Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>

Author: DeusData

tests/test_extraction.c

@@ -3444,15 +3444,15 @@ static bool any_call_arg_resolves_to(CBMFileResult *r, const char *url) {
 
 TEST(extract_c_url_builder_gated_issue1009) {
     CBMFileResult *r = extract("static const char *cfg_path(void) {\n"
-                               "  return \"/etc/myapp/conf.d\";\n"
+                               "  return \"/srv/myapp/conf.d\";\n"
                                "}\n"
                                "void init(void) {\n"
                                "  parse_config(cfg_path());\n"
                                "}\n",
                                CBM_LANG_C, "t", "conf.c");
     ASSERT_NOT_NULL(r);
     ASSERT_FALSE(r->has_error);
-    ASSERT_FALSE(any_call_arg_resolves_to(r, "/etc/myapp/conf.d"));
+    ASSERT_FALSE(any_call_arg_resolves_to(r, "/srv/myapp/conf.d"));
     cbm_free_result(r);
     PASS();
 }