ruff

0b6ce1c7 - [`ruff`] Handle empty t-strings in `unnecessary-empty-iterable-within-deque-call` (`RUF037`) (#20045)

[`ruff`] Handle empty t-strings in `unnecessary-empty-iterable-within-deque-call` (`RUF037`) (#20045) Adds a method to `TStringValue` to detect whether the t-string is empty _as an iterable_. Note the subtlety here that, unlike f-strings, an empty t-string is still truthy (i.e. `bool(t"")==True`). Closes #19951