ICU Error in DateTimePatternGeneratorCache::CreateGenerator about rusty_v8

[piercefreeman]

I see now that there are separate flags to link ICU at runtime. For anyone else that stumbles on this crash in the future:

#603
https://github.com/denoland/deno_core/blob/d8e13061571e587b92487d391861faa40bd84a6f/core/runtime/setup.rs#L21

The fix ends up being pretty simple, you just need to link the common .dat file with v8::icu::set_common_data_73. The deno_core_icudata publishes this file to an isolated crate as well.

v8::icu::set_common_data_73(deno_core_icudata::ICU_DATA).unwrap();