Ensure _options attribute is assigned in Select constructor (#2690)

* Ensure _options attribute is assigned in Select constructor

* Update CHANGELOG.md

---------

Co-authored-by: Will McGugan <[email protected]>

Author: darrenburns

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Fixed zero division error https://github.com/Textualize/textual/issues/2673
 - Fix `scroll_to_center` when there were nested layers out of view (Compositor full_map not populated fully) https://github.com/Textualize/textual/pull/2684
+- Fix crash when `Select` widget value attribute was set in `compose` https://github.com/Textualize/textual/pull/2690
 - Issue with computing progress in workers https://github.com/Textualize/textual/pull/2686
 - Issues with `switch_screen` not updating the results callback appropriately https://github.com/Textualize/textual/issues/2650
 

src/textual/widgets/_select.py

@@ -273,6 +273,7 @@ def __init__(
         self.prompt = prompt
         self._initial_options = list(options)
         self._value: SelectType | None = value
+        self._options = options
 
     def set_options(self, options: Iterable[tuple[RenderableType, SelectType]]) -> None:
         """Set the options for the Select.