fix(ast/estree): Fix TSImportType

[therewillbecode]

Skips the isTypeOf field for the Estree serialiser on the TSImportType node.

Part of our broader work to align our AST's ESTree output with that of TS-ESLint's. Relates to #9705

[graphite-app]

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #10200 will degrade performances by 4.65%

_{Comparing therewillbecode:fix/ts-import-type (644f6c6) with main (9ffb613)}

Summary

⚡ 1 improvements
❌ 2 regressions
✅ 33 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	formatter[antd.js]	7.6 ms	7.9 ms	-3.58%
❌	formatter[react.development.js]	41.4 µs	43.4 µs	-4.65%
⚡	formatter[typescript.js]	7.6 ms	7.2 ms	+5.56%