RFR: 8360520: RISC-V: C1: Fix primitive array clone intrinsic regression after JDK-8333154 [v5]

[Feilong Jiang]

On Tue, 22 Jul 2025 15:25:25 GMT, Galder Zamarreño <galder at openjdk.org> wrote:

>> `init_flags_for_copy_stubs` appears to be misleading, as it suggests we want to generate array copy stubs for those flags.
>> How about `get_necessary_copy_flags`? We can add other flags if needed in the future.
>
> I'm unsure about the use of the word `necessary`. What about `get_initial_copy_flags`?

`get_initial_copy_flags` looks fine, I have added it to `LIR_OpArrayCopy`.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25976#discussion_r2224099302