Support absolute disabled_globs (#25755)

Closes: #25556

We were always comparing `disabled_globs` against the relative file
path, we'll now use the absolute path if the glob is also absolute.

Release Notes:

- Support absolute globs in `edit_predictions.disabled_globs`

crates/language/src/buffer.rs

@@ -4477,6 +4477,7 @@ impl IndentSize {
 pub struct TestFile {
     pub path: Arc<Path>,
     pub root_name: String,
+    pub local_root: Option<PathBuf>,
 }
 
 #[cfg(any(test, feature = "test-support"))]
@@ -4490,7 +4491,11 @@ impl File for TestFile {
     }
 
     fn as_local(&self) -> Option<&dyn LocalFile> {
-        None
+        if self.local_root.is_some() {
+            Some(self)
+        } else {
+            None
+        }
     }
 
     fn disk_state(&self) -> DiskState {
@@ -4518,6 +4523,23 @@ impl File for TestFile {
     }
 }
 
+#[cfg(any(test, feature = "test-support"))]
+impl LocalFile for TestFile {
+    fn abs_path(&self, _cx: &App) -> PathBuf {
+        PathBuf::from(self.local_root.as_ref().unwrap())
+            .join(&self.root_name)
+            .join(self.path.as_ref())
+    }
+
+    fn load(&self, _cx: &App) -> Task<Result<String>> {
+        unimplemented!()
+    }
+
+    fn load_bytes(&self, _cx: &App) -> Task<Result<Vec<u8>>> {
+        unimplemented!()
+    }
+}
+
 pub(crate) fn contiguous_ranges(
     values: impl Iterator<Item = u32>,
     max_len: usize,