Throw ElementError when the module is not of the expected type

[romaricpascal]

Make each component throw a TypeError when the $module it receives is not of the type it needs to function properly.

Closes #4035.

[domoscargin]

I agree that the generic types approach seems neater and less prone to error here.

I guess we could also make the moduleType getter @abstract and force child classes to implement it, but I don't think that really solves much - just delegates more stuff to the child class instead of abstracting it into the base class.

[github-actions]

📋 Stats

File sizes

File	Size
dist/govuk-frontend-4.6.0.min.css	118.07 KiB
dist/govuk-frontend-4.6.0.min.js	47.1 KiB
dist/govuk-frontend-ie8-4.6.0.min.css	79.27 KiB
packages/govuk-frontend/dist/govuk/all.bundle.js	75.59 KiB
packages/govuk-frontend/dist/govuk/all.bundle.mjs	71.01 KiB
packages/govuk-frontend/dist/govuk/all.mjs	3.84 KiB
packages/govuk-frontend/dist/govuk/govuk-frontend-component.mjs	359 B
packages/govuk-frontend/dist/govuk/govuk-frontend.min.js	36.79 KiB
packages/govuk-frontend/dist/govuk/i18n.mjs	5.83 KiB

Modules

File	Size
all.mjs	67.11 KiB
components/accordion/accordion.mjs	21.78 KiB
components/button/button.mjs	4.58 KiB
components/character-count/character-count.mjs	21.52 KiB
components/checkboxes/checkboxes.mjs	5.28 KiB
components/error-summary/error-summary.mjs	5.88 KiB
components/exit-this-page/exit-this-page.mjs	16.34 KiB
components/header/header.mjs	3.21 KiB
components/notification-banner/notification-banner.mjs	4.42 KiB
components/radios/radios.mjs	4.29 KiB
components/skip-link/skip-link.mjs	3.63 KiB
components/tabs/tabs.mjs	8.95 KiB

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Action run for 655af8f

[romaricpascal]

@colinrotherham @domoscargin Ready for re-review, simplified implementation by replacing the return this with throwing errors 😊

[romaricpascal]

Actually no, let me drop that first commit that's not relevant anymore. Sorry 😔 All sorted!