Escape markdown in tools' ui_text (#27502)

Escape markdown in tools' `ui_text`

<img width="628" alt="Screenshot 2025-03-26 at 10 43 23 AM"
src="https://github.com/user-attachments/assets/bb694821-aae7-4ccf-a35a-a3317b0222d5"
/>


Release Notes:

- N/A

crates/assistant_tools/src/create_file_tool.rs

@@ -7,6 +7,7 @@ use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
 use std::sync::Arc;
 use ui::IconName;
+use util::markdown::MarkdownString;
 
 #[derive(Debug, Serialize, Deserialize, JsonSchema)]
 pub struct CreateFileToolInput {
@@ -57,7 +58,7 @@ impl Tool for CreateFileTool {
     fn ui_text(&self, input: &serde_json::Value) -> String {
         match serde_json::from_value::<CreateFileToolInput>(input.clone()) {
             Ok(input) => {
-                let path = input.path.as_str();
+                let path = MarkdownString::escape(&input.path);
                 format!("Create file `{path}`")
             }
             Err(_) => "Create file".to_string(),