ci: use a v -prod self task, before v test-self to reduce more the CI times in the common case

[spytheman]

No description provided.

[spytheman]

Hm, interesting ... These tests fail to compile with V, produced by v -prod self with msvc as C compiler, with crashes in the checker:

To reproduce just failure 1 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\datatypes\ringbuffer_test.v"
To reproduce just failure 2 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\datatypes\set_test.v"
To reproduce just failure 3 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\eventbus\eventbus_test.v"
To reproduce just failure 4 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\net\html\dom_test.v"
To reproduce just failure 5 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\net\html\html_test.v"
To reproduce just failure 6 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\net\html\parser_test.v"
To reproduce just failure 7 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\net\html\tag_test.v"
To reproduce just failure 8 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\compiler_errors_test.v"
To reproduce just failure 9 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\assign\assign_type_checking_with_generics_test.v"
To reproduce just failure 10 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\builtin_arrays\array_delete_last_test.v"
To reproduce just failure 11 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\slow_tests\inout\compiler_test.v"
To reproduce just failure 12 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\builtin_maps\map_clear_test.v"
To reproduce just failure 13 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\builtin_maps\map_generic_call_test.v"
To reproduce just failure 14 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\fns\fn_voidptr_param_call_with_nonpointer_rvalue_test.v"
To reproduce just failure 15 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\generics\generic_operator_overload_test.v"
To reproduce just failure 16 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\generics\generic_struct_init_with_update_expr_test.v"
To reproduce just failure 17 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\generics\generics_fn_return_generic_interface_test.v"
To reproduce just failure 18 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\generics\generics_interface_with_multi_generic_types_test.v"
To reproduce just failure 19 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\generics\generics_map_with_reference_arg_test.v"
To reproduce just failure 20 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\generics\generics_method_chaining_call_test.v"
To reproduce just failure 21 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\generics\generics_return_generics_struct_test.v"
To reproduce just failure 22 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\generics\generics_return_reference_generics_struct_test.v"
To reproduce just failure 23 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\generics\generics_struct_field_with_generics_struct_elements_test.v"
To reproduce just failure 24 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\generics\generics_with_embed_generics_test.v"
To reproduce just failure 25 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\loops\for_in_iterator_of_generic_struct_1_test.v"
To reproduce just failure 26 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\loops\for_in_iterator_of_generic_struct_2_test.v"
To reproduce just failure 27 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\v\tests\structs\struct_array_generic_field_test.v"
To reproduce just failure 28 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\veb\csrf\csrf_test.v"
To reproduce just failure 29 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\vweb\csrf\csrf_test.v"
To reproduce just failure 30 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\x\encoding\asn1\sequence_test.v"
To reproduce just failure 31 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\x\encoding\asn1\set_test.v"
To reproduce just failure 32 run:    "D:\a\v\v\v.exe"  "D:\a\v\v\vlib\x\vweb\csrf\csrf_test.v"