Add excluded_files to pane::DeploySearch (#30699)

In accordance with #30327, I saw no reason for included files to get
special treatment, and I actually get use out of prefilling excluded
files because I like not to search symlinked files which, in my
workflow, use a naming convention.

This is simply implementing the same exact changes, but for excluded. It
was tested with `"space /": ["pane::DeploySearch", { "excluded_files":
"**/_*.tf" }]` and works just fine.

Release Notes:

- Added `excluded_files` to `pane::DeploySearch`.

crates/workspace/src/pane.rs

@@ -156,6 +156,8 @@ pub struct DeploySearch {
     pub replace_enabled: bool,
     #[serde(default)]
     pub included_files: Option<String>,
+    #[serde(default)]
+    pub excluded_files: Option<String>,
 }
 
 impl_actions!(
@@ -203,6 +205,7 @@ impl DeploySearch {
         Self {
             replace_enabled: false,
             included_files: None,
+            excluded_files: None,
         }
     }
 }
@@ -3114,6 +3117,7 @@ fn default_render_tab_bar_buttons(
                                 DeploySearch {
                                     replace_enabled: false,
                                     included_files: None,
+                                    excluded_files: None,
                                 }
                                 .boxed_clone(),
                             )