Remove conflict between --no-sync and --frozen in uv run (#9400)

## Summary

For reasons outlined in the linked issue, this is needlessly strict.

Closes https://github.com/astral-sh/uv/issues/9397.

crates/uv-cli/src/lib.rs

@@ -2731,7 +2731,7 @@ pub struct RunArgs {
     ///
     /// Implies `--frozen`, as the project dependencies will be ignored (i.e., the lockfile will not
     /// be updated, since the environment will not be synced regardless).
-    #[arg(long, env = EnvVars::UV_NO_SYNC, value_parser = clap::builder::BoolishValueParser::new(), conflicts_with = "frozen")]
+    #[arg(long, env = EnvVars::UV_NO_SYNC, value_parser = clap::builder::BoolishValueParser::new())]
     pub no_sync: bool,
 
     /// Assert that the `uv.lock` will remain unchanged.