DEVPROD-18316Allow fuzzer tasks to use the no_multiversion_generate_tasks tag

[sleaux]

Respecting the no_multiversion_generate_tasks tag allows creating fuzzer tasks that do multiversion setup, but don't require specific multiversion tasks to be defined for suites that test explicit multiversion binaries.

For example:

  - <<: *jstestfuzz_template
    name: foo_fuzzer_gen
    tags:
      [
        "multiversion",
        "no_multiversion_generate_tasks",
      ]
    commands:
      - func: "generate resmoke tasks"
        vars:
          <<: *jstestfuzz_config_vars
          num_files: 1
          num_tasks: 1
          npm_command: update-fuzzer

Will generate a single task that does multiversion setup, and runs to foo_fuzzer suite.