fix(meta): add missing hid to icon tags

[buoto]

The favicon head links were pushed without hid and name and they weren't deduplicated in mergeMeta:

pwa-module/lib/meta.utils.js

Lines 13 to 19 in 245aadc

	// Avoid duplicates
	if (
	(item.hid && hasMeta(to[key], 'hid', item.hid)) ||
	(item.name && hasMeta(to[key], 'name', item.name))
	) {
	continue
	}

As a result they were appended every time the page was visited, causing a memory leak and crashing the server after some time.

[codecov]

Codecov Report

Merging #428 (d477c38) into master (245aadc) will not change coverage.
The diff coverage is 66.66%.

@@           Coverage Diff           @@
##           master     #428   +/-   ##
=======================================
  Coverage   85.28%   85.28%           
=======================================
  Files           9        9           
  Lines         367      367           
  Branches      122      122           
=======================================
  Hits          313      313           
  Misses         54       54           

Impacted Files	Coverage Δ
src/meta.ts	78.78% <66.66%> (ø)

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[pi0]

Thanks!

[pi0]

https://github.com/nuxt-community/pwa-module/releases/tag/v3.3.5