[FIX] Rename T.alloc_buffer to T.sblock_alloc_buffer

[MasterJH5574]

This PR fixes compilation silent failures due to a recent refactor in mainline TVM apache/tvm#18865.

[gemini-code-assist]

Summary of Changes

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This pull request implements a necessary API update across the codebase to align with a recent refactoring in the TVM framework. The change specifically targets buffer allocation calls, ensuring compatibility and resolving silent compilation failures, thereby maintaining the stability and functionality of the system.

Highlights

• API Renaming: The T.alloc_buffer function calls have been uniformly updated to T.sblock_alloc_buffer across multiple compiler passes and operations.
• Compilation Fix: This change addresses and resolves compilation failures that arose from a recent refactor in the mainline TVM project.

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[gemini-code-assist]

Code Review

This pull request correctly updates the codebase by renaming all instances of T.alloc_buffer to T.sblock_alloc_buffer. This change is necessary to adapt to a recent API refactoring in the upstream TVM project, fixing potential compilation failures. The changes are applied consistently across all relevant files, and I found no issues with the implementation.