[build issue] Adding parsers that use nullish coalescing or optional chaining seems to break builds

[josh-hemphill]

Describe the bug Trying to add Vue Language-Tools for the default block parsers that ships with Vue, but it seems to make use of optional chaining and nullish coalescing operators, which throws errors on build.

To Reproduce Steps to reproduce the behavior:

1. Build my feature fork or load any library using optional chaining or nullish coalescing: josh-hemphill/astexplorer
2. See error

The full error:

ERROR in ./node_modules/@vue/language-core/lib/virtualFile/computedSfc.js 14:107
Module parse failed: Unexpected token (14:107)
You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
|         return res;
|     };
>     const template = computedNullableSfcBlock('template', 'html', (0, computeds_1.computed)(() => parsed()?.descriptor.template ?? undefined), (_block, base) => {
|         const compiledAst = computedTemplateAst(base);
|         return mergeObject(base, {
 @ ./src/parsers/vue/vue-language-tools-core.js 26:4-37:6
 @ ./src/parsers sync ^\.\/(?!utils|transpilers)[^/]+\/(transformers\/([^/]+)\/)?(codeExample\.txt|[^/]+?\.js)$
 @ ./src/parsers/index.js
 @ ./src/store/reducers.js
 @ ./src/app.js

[IPWright83]

Just to voice I'm trying to build some stuff using optional chaining too and it means I can't easily switch between coding the babel plugin and testing it in AST Explorer which is a shame as it's so incredibly useful. So I'd also appreciate support for these.