Import attributes tests violate module specifier rules

[linusg]

$ git grep '\.\./resources'
test/language/module-code/import-attributes/allow-nlt-before-with.js:import "../resources/ensure-linking-error_FIXTURE.js";
test/language/module-code/import-attributes/import-attribute-key-identifiername.js:import "../resources/ensure-linking-error_FIXTURE.js";
test/language/module-code/import-attributes/import-attribute-key-string-double.js:import "../resources/ensure-linking-error_FIXTURE.js";
test/language/module-code/import-attributes/import-attribute-key-string-single.js:import "../resources/ensure-linking-error_FIXTURE.js";
test/language/module-code/import-attributes/import-attribute-many.js:import "../resources/ensure-linking-error_FIXTURE.js";
test/language/module-code/import-attributes/import-attribute-newlines.js:import "../resources/ensure-linking-error_FIXTURE.js";
test/language/module-code/import-attributes/import-attribute-trlng-comma.js:import "../resources/ensure-linking-error_FIXTURE.js";
test/language/module-code/import-attributes/import-attribute-value-string-double.js:import "../resources/ensure-linking-error_FIXTURE.js";
test/language/module-code/import-attributes/import-attribute-value-string-single.js:import "../resources/ensure-linking-error_FIXTURE.js";
test/language/module-code/source-phase-import/import-source-binding-name-2.js:import "../resources/ensure-linking-error_FIXTURE.js";
test/language/module-code/source-phase-import/import-source-binding-name.js:import "../resources/ensure-linking-error_FIXTURE.js";
test/language/module-code/source-phase-import/import-source-newlines.js:import "../resources/ensure-linking-error_FIXTURE.js";

From https://github.com/tc39/test262/blob/main/INTERPRETING.md#modules:

All module specifiers used by Test262 begin with the character sequence ./.

test262-harness throws files into something like /tmp/BMyG8HPwaoqz0jyPNeth/ so the import gets resolved as /tmp/resources/ensure-linking-error_FIXTURE.js which doesn't exist.