Typescript-Angular: Fix several query parameters serialization issues #69

Job	Run time
Build projects (20.x, samples/client/petstore/typescript-angular-v16-provided-in-root/)	1m 49s
Build projects (20.x, samples/openapi3/client/petstore/typescript/builds/object_params/)	1m 1s
Build projects (20.x, samples/client/petstore/typescript-fetch/builds/default/)	48s
Build projects (20.x, samples/client/others/typescript-angular/)	1m 15s
Build projects (20.x, samples/openapi3/client/petstore/typescript/builds/default/)	1m 25s
Build projects (20.x, samples/client/petstore/typescript-angular-v18-provided-in-root/)	1m 57s
Build projects (20.x, samples/client/petstore/typescript-fetch/builds/es6-target/)	56s
Build projects (20.x, samples/client/petstore/typescript-angular-v20-provided-in-root/)	1m 57s
Build projects (20.x, samples/client/petstore/typescript-axios/builds/with-npm-version/)	1m 3s
Build projects (20.x, samples/client/petstore/typescript-angular-v19-provided-in-root/)	1m 56s
Build projects (20.x, samples/client/petstore/typescript-rxjs/builds/with-npm-version/)	49s
Build projects (20.x, samples/openapi3/client/petstore/typescript/builds/jquery/)	53s
Build projects (20.x, samples/client/petstore/typescript-angular-v17-provided-in-root/)	1m 57s
Build projects (20.x, samples/openapi3/client/petstore/typescript/builds/browser/)	1m 1s
Build projects (20.x, samples/client/petstore/typescript-fetch/builds/with-npm-version/)	42s
Build projects (20.x, samples/client/petstore/typescript-fetch/tests/default/)	1m 5s
	20m 34s

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