When using `.log_err()` or `.detach_and_log_err(cx)` or similar.

See also https://github.com/zed-industries/zed/pull/36404,
https://github.com/zed-industries/zed/pull/46383,
https://github.com/zed-industries/zed/pull/44896,
https://github.com/zed-industries/zed/pull/43917 and many more.

Before, a
https://github.com/zed-industries/zed/blob/62bd61a6793c5f983fbc1700825208f19d780d52/crates/languages/src/go.rs#L568
line would show a backtrace even for `.context("no cached binary")?;`
case, same as many other usages around the code:

<img width="2032" height="1162" alt="before"
src="https://github.com/user-attachments/assets/ef2188b3-74c9-4c86-82b8-9fdaed3c26ae"
/>

After:

<img width="1896" height="157" alt="after"
src="https://github.com/user-attachments/assets/a1067d9f-61f4-4833-aeab-9f1042d2514a"
/>



To show a backtrace as before, use `log_err_with_backtrace`.

Release Notes:

- Improved Zed's log output on errors