This PR removes WiFi provisioning support from CI and examples (shifting to Thread/BLE provisioning), updates the CI configs for all Matter examples to drop the WiFi requirement, and adds new API keywords and a fresh “LambdaSingleCallbackManyEPs” example.
- Deleted the WiFiProvWithinMatter example (its .ino and ci.json) since BLE is now used for provisioning.
- Stripped "CONFIG_SOC_WIFI_SUPPORTED=y" from the CI JSON of existing examples to test Thread-only builds.
- Updated keywords.txt with new Matter API identifiers and introduced a new “LambdaSingleCallbackManyEPs” example with CI and source