ignore/types: add *.svelte.ts to Svelte file type glob

I was somewhat unsure about adding this, since `.svelte.ts` seems
primarily like a TypeScript file and it could be surprising to show up
in a search for Svelte files. In particular, ripgrep doesn't know how to
only search the Svelte stuff inside of a `.svelte.ts` file, so you could
end up with lots of false positives.

However, I was swayed[1] by the argument that the extension does
actually include `svelte` in it, so maybe this is fine. Please open an
issue if this change ends up being too annoying for most users.

Closes #2874, Closes #2909

[1]: https://github.com/BurntSushi/ripgrep/issues/2874#issuecomment-3126892931

crates/ignore/src/default_types.rs

@@ -267,7 +267,7 @@ pub(crate) const DEFAULT_TYPES: &[(&[&str], &[&str])] = &[
     (&["sql"], &["*.sql", "*.psql"]),
     (&["stylus"], &["*.styl"]),
     (&["sv"], &["*.v", "*.vg", "*.sv", "*.svh", "*.h"]),
-    (&["svelte"], &["*.svelte"]),
+    (&["svelte"], &["*.svelte", "*.svelte.ts"]),
     (&["svg"], &["*.svg"]),
     (&["swift"], &["*.swift"]),
     (&["swig"], &["*.def", "*.i"]),