codeintel: add ignore-engines based on yarn version

[Strum355]

Previously, auto-indexing would fail in projects using Yarn version greater than 1.x.x with the error ➤ YN0050: The --ignore-engines option is deprecated; engine checking isn't a core feature anymore. Example in the sg/sg repo: https://sourcegraph.sourcegraph.com/github.com/sourcegraph/sourcegraph/-/code-graph/indexes/TFNJRkluZGV4Ojk1Mjk=.

As determining the Yarn version can only be done reliably by invoking yarn (Im miffed about this), we have to move the check from typescript.lua inference script to runtime instead.

Related PR in sourcegraph/sourcegraph: https://github.com/sourcegraph/sourcegraph/pull/43592

Test plan

Before, based on typescript.lua:

$ docker run -v (pwd):/data -ti --rm --entrypoint /bin/bash sourcegraph/scip-typescript:autoindex
bash-5.1# cd data
bash-5.1# yarn --ignore-engines
+ '[' 1 -gt 1 ']'
+ /usr/local/bin/actual-yarn --ignore-engines
➤ YN0050: The --ignore-engines option is deprecated; engine checking isn't a core feature anymore

After, based on new typescript.lua:

$ docker run -v (pwd):/data -ti --rm --entrypoint /bin/bash sourcegraph/scip-typescript:autoindex
bash-5.1# cd data
bash-5.1# yarn
+ ADDITIONAL_ARGS=--ignore-engines
++ /usr/local/bin/actual-yarn --version
++ cut -d. -f1
+ '[' 3 -gt 1 ']'
+ ADDITIONAL_ARGS=
+ '[' 0 -gt 1 ']'
+ /usr/local/bin/actual-yarn
➤ YN0065: Yarn will periodically gather anonymous telemetry: https://yarnpkg.com/advanced/telemetry
➤ YN0065: Run yarn config set --home enableTelemetry 0 to disable

➤ YN0000: ┌ Resolution step
➤ YN0000: └ Completed in 0s 340ms
➤ YN0000: ┌ Fetch step
➤ YN0000: └ Completed in 0s 501ms
➤ YN0000: ┌ Link step
➤ YN0000: └ Completed in 0s 852ms
➤ YN0000: Done in 2s 152ms
bash-5.1#