✨(react) rework the behavior of the Select component

We decided to change a bit the behavior of the Select:
- Do not trigger onChange on first render if value is defined
- Show all options on searchable select menu  opening even if there is an
  existing value.
- Clear the input field if no choice are selected
- Clear the added text to the input field when a value is already selected

.changeset/wicked-games-tie.md

@@ -0,0 +1,5 @@
+---
+"@openfun/cunningham-react": minor
+---
+
+rework the behavior of the Select component