Add new config schema allOf condition support

[colinrotherham]

To offload some old code here's support for allOf schema conditions (alongside anyOf)

Might never need this, but to prevent i18n or rememberExpanded being accidentally overridden by null/undefined:

/**
  * Accordion config schema
  *
  * @constant
  * @satisfies {Schema}
  */
static schema = Object.freeze({
  allOf: [
    {
      required: ['i18n'],
      errorMessage: '"i18n" must be provided'
    },
    {
      required: ['rememberExpanded'],
      errorMessage: '"rememberExpanded" must be provided'
    }
  ]
})

[github-actions]

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File sizes

File	Size
dist/govuk-frontend-development.min.css	112.86 KiB
dist/govuk-frontend-development.min.js	39.47 KiB
packages/govuk-frontend/dist/govuk/all.bundle.js	81.45 KiB
packages/govuk-frontend/dist/govuk/all.bundle.mjs	76.5 KiB
packages/govuk-frontend/dist/govuk/all.mjs	3.86 KiB
packages/govuk-frontend/dist/govuk/govuk-frontend-component.mjs	359 B
packages/govuk-frontend/dist/govuk/govuk-frontend.min.css	112.85 KiB
packages/govuk-frontend/dist/govuk/govuk-frontend.min.js	39.46 KiB
packages/govuk-frontend/dist/govuk/i18n.mjs	5.55 KiB

Modules

File	Size (bundled)	Size (minified)
all.mjs	72.33 KiB	37.64 KiB
accordion.mjs	22.71 KiB	12.85 KiB
button.mjs	5.98 KiB	2.69 KiB
character-count.mjs	22.49 KiB	9.96 KiB
checkboxes.mjs	5.83 KiB	2.83 KiB
error-summary.mjs	7.89 KiB	3.46 KiB
exit-this-page.mjs	17.1 KiB	9.26 KiB
header.mjs	4.46 KiB	2.6 KiB
notification-banner.mjs	6.26 KiB	2.62 KiB
radios.mjs	4.83 KiB	2.38 KiB
skip-link.mjs	4.39 KiB	2.18 KiB
tabs.mjs	10.13 KiB	6.11 KiB

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