Apollo vscode extension goto definition not working

When project is configured as "client" and schema is provided via `localSchemaFile` config property.

**Intended outcome:**
Autocompletion, syntax highlighting and goto definition is working.

**Actual outcome:**
Autocompletion and syntax highlighting are working but goto definition is not working since apollo-language-server is returning `"uri": "GraphQL request"` as file location although line number in response is correct. This is not happening if schema is specified via remote url.

**How to reproduce the issue:**

**Versions**
apollographql.vscode-apollo 1.12.1

Additionally, I can make autocompletion or goto functionality work for server/service repository.
Note: my project is set up as monorepo and I have apollo.config.js in both client/ and server/ folders.

Reproduce the issue in the monorepo setup with apollo.config.js in both client/ and server/, using client configuration with localSchemaFile. Start by tracing the apollo-language-server response and the VS Code extension's goto-definition handling, then compare it with the remote-URL case. Done means goto definition resolves to the local schema file rather than "GraphQL request".

Written by the indexing model from the issue text.