Update note on Key Pair Auth support

[ananth11]

Clarify that Key Pair Auth is not supported for both Dataflows Gen1 and Power Apps.

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[ttorble]

@whhender

Can you review the proposed changes?

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[Copilot]

Pull request overview

Updates the Snowflake connector documentation to clarify product scope for Key Pair Auth support, aligning expectations for users of different Power Query hosts.

Changes:

• Expands the existing note to state Key Pair Auth isn’t supported for both Dataflows Gen1 and Power Apps (Dataflows).

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[Copilot]

Terminology looks inconsistent: this note uses “Dataflows Gen1”, while other docs (and the nearby “Fabric (Dataflow Gen2)” entry in this same file) use the singular form “Dataflow Gen1/Gen2”. Consider updating to “Dataflow Gen1” (and, if you mean Power BI specifically, “Power BI Dataflow Gen1”) for consistency and to avoid ambiguity with other “dataflows” products.

Suggested change

	> Key Pair Auth is not supported for Dataflows Gen1 and Power Apps (Dataflows), and there are no plans to change this in the future.
	> Key Pair Auth is not supported for Power BI Dataflow Gen1 and Power Apps (Dataflows), and there are no plans to change this in the future.