[typescript-react-query] custom fetcher path incorrect when using near-operation-file

**Describe the bug**
I'm trying to set up typescript-react-query to work together with the near-operation-file preset, and having a difficulty with a custom `fetcher` config option. The path that I provide seems to be used as-written in each generated file, rather than being adjusted based on the location of the file.

**To Reproduce**
Steps to reproduce the behavior:

https://codesandbox.io/s/graphql-code-generator-6904-40u7s?file=/src/getUser.generated.ts

Note the path to the custom fetcher is incorrect, it is not relative to the file, but uses the string from the config exactly.

3. My `codegen.yml` config file:

```yml
generates:
./src/types.ts:
plugins:
- typescript
./src:
preset: near-operation-file
presetConfig:
baseTypesPath: ./types.ts
plugins:
- typescript-operations
- typescript-react-query
config:
useTypeImports: true
fetcher:
func: './src/api/fetch#customFetcher'
```

**Expected behavior**

I expect that the `fetcher` would attempt to resolve to my file, and then each time it's referenced, the relative path from the generated file to the custom fetcher file would be used.

**Environment:**

- OS: mac
- `@graphql-codegen/...`: See reproduction
- NodeJS: 16

**Additional context**