Don't try to schedule EmbeddingFwdOp

[naoyam]

This should also work around #4013

[github-actions]

Description

• Updated scheduler to reject EmbeddingFwdOp in non-ExprEval schedulers

• Improved error message for unsupported operations

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Changes walkthrough 📝

	Relevant files
Enhancement	registry.cpp Reject EmbeddingFwdOp in non-ExprEval schedulers                  csrc/scheduler/registry.cpp Added EmbeddingFwdOp to the list of unsupported operations Updated error message to indicate presence of unsupported operations +3/-3

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PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

🧪 No relevant tests

⚡ Recommended focus areas for review Redundant Comment The comment "These ops are are only accepted in ExprEval" contains a typo and is redundant as it is followed by a similar comment. // These ops are are only accepted in `ExprEval` // scheduler, all other schedulers should reject them. Typo The comment contains a typo: "These ops are are only accepted in ExprEval" should be "These ops are only accepted in ExprEval". // These ops are are only accepted in `ExprEval` Inconsistent Error Message The error message in scheduler_debug_utils::canScheduleRejectReason has changed from "SdpaOps are not supported." to "Has unsupported ops". Ensure that the new message is consistent with the project's error messaging guidelines. scheduler_type, "Has unsupported ops");

[naoyam]

!build