Fixes 7326: 3.19-prealpha: Same preloaded font URL is added twice to DB preload fonts table

[jeawhanlee]

Description

Fixes wp-media/wp-rocket#7326
Fixes issues with same font urls added multiple times in DB

Type of change

• New feature (non-breaking change which adds functionality).
• Bug fix (non-breaking change which fixes an issue).

Detailed scenario

What was tested

Tested that the beacon did not send duplicate urls to DB.
Tested both Manually and Automated.

How to test

• Visit a template setup like this one
• Check DB and see that only one entry is there.
  

Technical description

Documentation

Used Set to create unique entries.

New dependencies

N/A

Risks

N/A

Mandatory Checklist

Code validation

• I validated all the Acceptance Criteria. If possible, provide screenshots or videos.
• I triggered all changed lines of code at least once without new errors/warnings/notices.
• I implemented built-in tests to cover the new/changed code.

Code style

• I wrote a self-explanatory code about what it does.
• I protected entry points against unexpected inputs.
• I did not introduce unnecessary complexity.
• Output messages (errors, notices, logs) are explicit enough for users to understand the issue and are actionnable.

Unticked items justification

If some mandatory items are not relevant, explain why in this section.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
Report missing for e20092d1	✅ 50.00% (target: 50.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (e20092d)	Report Missing	Report Missing	Report Missing
Head commit (c88e91c)	1377	1054	76.54%

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#44)	2	1	50.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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Footnotes

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