test: use fully qualified request type name in tests (#930)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 475956674

Source-Link: googleapis/googleapis@210422e

Source-Link: googleapis/googleapis-gen@43a3716
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNDNhMzcxNjAwY2ViZGVjYWE4MTg2ZjQ3OTIwYTlhNDcxMTgyZGQ1YiJ9

test: use fully qualified request type name in tests
PiperOrigin-RevId: 475685359

Source-Link: googleapis/googleapis@7a12973

Source-Link: googleapis/googleapis-gen@370c729
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiMzcwYzcyOWUyYmEwNjJhMTY3NDQ5YzI3ODgyYmE1ZjM3OWM1YzM0ZCJ9

feat: added Speech-to-Text V2 API proto
The next generation Speech-to-Text V2 API provides the same features clients are familiar with in the existing Speech-to-Text API, while modernizing and simplifying the API using API best practices, resourceful methods, and updated infrastructure. Although this proto is published, the service is not yet available.

PiperOrigin-RevId: 474926510

Source-Link: googleapis/googleapis@bb4d7f4

Source-Link: googleapis/googleapis-gen@9ecdb75
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiOWVjZGI3NTAzOGIxMGNmZTQ2ODVkOGEzMDFlMmFiZjhlNGRmYWE0OCJ9

Author: gcf-owl-bot[bot]