chore: Explicitly call tsc with yarn lint:ts in apix CI (#916)
chore: Explicitly call tsc with yarn lint:ts in apix CI (#916)

Replaced apix ci call to yarn build-extensions with call to
lint:ts to trigger TSC to catch typescript complilation errors.
looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen