inline_completion_button: Show the usage limits returned from the API (#29239)

This PR updates the usage meter for edit predictions to use the limits
returned from the API instead of basing it off the plan.

This will allow limits to be updated from the server rather than being
embedded in the client.

Release Notes:

- N/A

crates/inline_completion_button/src/inline_completion_button.rs

@@ -34,7 +34,7 @@ use workspace::{
     notifications::NotificationId,
 };
 use zed_actions::OpenBrowser;
-use zed_llm_client::{Plan, UsageLimit};
+use zed_llm_client::UsageLimit;
 use zeta::RateCompletions;
 
 actions!(edit_prediction, [ToggleMenu]);
@@ -408,10 +408,7 @@ impl InlineCompletionButton {
                 menu = menu.header("Usage");
                 menu = menu.custom_entry(
                     move |_window, cx| {
-                        let plan = Plan::ZedProTrial;
-                        let edit_predictions_limit = plan.edit_predictions_limit();
-
-                        let used_percentage = match edit_predictions_limit {
+                        let used_percentage = match usage.limit {
                             UsageLimit::Limited(limit) => {
                                 Some((usage.amount as f32 / limit as f32) * 100.)
                             }
@@ -426,7 +423,7 @@ impl InlineCompletionButton {
                                     .map(|percent| ProgressBar::new("usage", percent, 100., cx)),
                             )
                             .child(
-                                Label::new(match edit_predictions_limit {
+                                Label::new(match usage.limit {
                                     UsageLimit::Limited(limit) => {
                                         format!("{} / {limit}", usage.amount)
                                     }