Change package title could affect the version ordering in search requests

[mrodm]

As mentioned in #1585 , changing the title of a package in a given version could affect the ordering of packages shown in the search requests (setting the all=true query parameter).

For instance, 1password package change its title in 1.4.0 and this could affect how packages are sorted:

$ curl -s "https://epr.elastic.co/search?package=1password&all=true" | jq -r '.[] | {name, title, version}'
{
  "name": "1password",
  "title": "1Password",
  "version": "1.10.0"
}
{
  "name": "1password",
  "title": "1Password",
  "version": "1.11.0"
}
{
  "name": "1password",
  "title": "1Password",
  "version": "1.12.0"
}
...
{
  "name": "1password",
  "title": "1Password",
  "version": "1.33.0"
}
{
  "name": "1password",
  "title": "1Password",
  "version": "1.34.0"
}
{
  "name": "1password",
  "title": "1Password",
  "version": "1.4.0"
}
...
{
  "name": "1password",
  "title": "1Password",
  "version": "1.9.0"
}
{
  "name": "1password",
  "title": "1Password Events Reporting",
  "version": "0.1.1"
}
{
  "name": "1password",
  "title": "1Password Events Reporting",
  "version": "0.2.0"
}
...
{
  "name": "1password",
  "title": "1Password Events Reporting",
  "version": "1.3.0"
}

Related code where packages are sorted first by title and then by version:

package-registry/packages/packages.go

Lines 43 to 48 in 721c062

	func (p Packages) Less(i, j int) bool {
	if p[i].Title != nil && p[j].Title != nil && *p[i].Title != *p[j].Title {
	return *p[i].Title < *p[j].Title
	}
	return p[i].Version < p[j].Version
	}

Relates:

• Return package sorted by pacakge title #647
• Sort packages by semver #1585 (comment)
• Sort packages by semver #1585