Error message when trying to loop over tuple without `inline` is confusing

[Justus2308]

Zig Version

0.15.2

Steps to Reproduce and Observed Output

When trying to loop over a tuple with runtime-known fields without inline:

pub fn main() !void {
    var tuple = .{ @as(u32, 123), @as(u32, 456) };
    _ = &tuple;
    for (tuple) |value| _ = value;
}

./example.zig:4:10: error: unable to resolve comptime value
    for (tuple) |value| _ = value;
         ^~~~~
./example.zig:4:10: note: tuple field index must be comptime-known

This requires quite a mental jump and knowledge of how tuples are represented to figure out that inline is the solution here. Making the 'tuple field index' comptime-known is a concept that shouldn't really be exposed to the user if they're not explicitly using @typeInfo IMO.

Expected Output

An error message that is more context-aware and directly suggests using inline.