200E..200F    ; disallowed                             # 1.1  LEFT-TO-RIGHT MARK..RIGHT-TO-LEFT MARK
2010          ; valid                  ;      ; NV8    # 1.1  HYPHEN
2011          ; mapped                 ; 2010          # 1.1  NON-BREAKING HYPHEN
2012..2016    ; valid                  ;      ; NV8    # 1.1  FIGURE DASH..DOUBLE VERTICAL LINE
2017          ; disallowed_STD3_mapped ; 0020 0333     # 1.1  DOUBLE LOW LINE

AAA,EAAA,KACA,MAAA,aA+DM,WAhEN,KAAA,EAAA,EAAA,KACA,MAAA,aA+DM,WAhEN,KAAA,EAAA,EAAA,KACA,MAAA,IA+DM,WAhEN,KAAA,EAAA,EAAA,KACA,MAAA,aA+DM,WAhEN,KAAA,EAAA,EAAA,KACA,MAAA,aA+DM,WAhEN,KAAA,EAAA,EAAA,KACA,MAAA,IA+DM,YAhEN,KAAA,EAAA,EAAA,KACA,MAAA,aA+DM,YAhEN,KAAA,EAAA,EAAA,KACA,MAAA,aA+DM,YAhEN,KAAA,EAAA,EAAA,KACA,MAAA,KAuEQ,cAxDV,YAAA,EAwDU,cAxDV,YAAA,YAwDU,cAxDV,YAAA,aAwDU,cAxDV,YAAA,IAwDU,cAxDV,YAAA,aAwDU,cAxDV,YAAA,aAwDU,cAxDV,YAAA,IAwDU,cAxDV,YAAA,aAwDU,cAxDV,YAAA,aAwDU,cAxDV,YAAA,IAwDU,eAxDV,YAA...

```Python
async def do_something():
    try:
        yield something
    finally:
        some_cleanup()
```

...that way the `finally` block is run regardless of any exception that might happen.

### Features

* The same PR [#4575](https://github.com/tiangolo/fastapi/pull/4575) from above also fixes the `contextvars` context for the code before and after `yield`. This was the main objective of that PR.