fix(testing): Fix BLOOM tokenizer, CLAP audio features, and CLVP text tester usage in tests

[harshaljanjani]

What does this PR do?

The following failing tests were identified and fixed in this PR:

→ BLOOM: batch_encode_plus() method was removed from PreTrainedTokenizerBase in commit 05c0e1d (the "rm slow tokenizers" refactor, #40936). The functionality was absorbed into __call__, so tokenizer(.) is the current equivalent.
→ CLAP: ClapModel.get_audio_features() returns a BaseModelOutputWithPooling obj not a tensor. The method internally calls self.audio_model(.), projects & normalizes features, stores them in audio_outputs.pooler_output, and returns the full output object. The old code calling .cpu() directly on the output object caused AttributeError.
→ CLVP: ModelTesterMixin has inherited tests (a couple are test_get_text_features_output, test_get_text_features_hidden_states, test_get_text_features_attentions) that fire when the model has get_text_features(). These tests call _text_features_prepare_config_and_inputs() which expects self.model_tester.text_model_tester to exist. Again, follows the canonical pattern in other multi-modal models like BridgeTower, Kosmos2.

Before the fix (feel free to cross-check; these errors are reproducible):

After the fix (feel free to cross-check):

Before submitting

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• Did you fix any necessary existing tests?

[github-actions]

[For maintainers] Suggested jobs to run (before merge)

run-slow: bloom, clap, clvp

[Rocketknight1]

Validated the fixes, and thank you for the PR!

[Rocketknight1]

run-slow: bloom, clap, clvp

[github-actions]

This comment contains run-slow, running the specified jobs:

models: ["models/bloom", "models/clap", "models/clvp"]
quantizations: []

[HuggingFaceDocBuilderDev]

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[github-actions]

CI Results

Workflow Run ⚙️

Commit Info

Context	Commit	Description
RUN	55fffb10	merge commit
PR	52ed6d4f	branch commit
main	8c3ac8f1	base commit

✅ No failing test specific to this PR 🎉 👏 !