Merge `builtins` into `EarlyLintPassObjects`.

Merge `builtins` into `EarlyLintPassObjects`.

This avoids calling `early_lint_node` twice.

Note: one `early_lint_node` call had `!pre_expansion` for the second
argument and the other had `false`. The new single call just has
`!pre_expansion`. This results in a reduction of duplicate error
messages in some `ui-fulldeps` tests. The order of some `ui-fulldeps`
output also changes, but that doesn't matter.