Add locations to native agent tool calls, and wire them up to UI (#36058)

Release Notes:

- N/A

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Co-authored-by: Conrad <conrad@zed.dev>

crates/agent2/Cargo.toml

@@ -49,6 +49,7 @@ settings.workspace = true
 smol.workspace = true
 task.workspace = true
 terminal.workspace = true
+text.workspace = true
 ui.workspace = true
 util.workspace = true
 uuid.workspace = true