Results using "group related terms" does not sort by frequency as expected

[alvinhochun]

Description
When using "group related terms", the results are sometimes sorted in a weird order instead of using the frequency lists.

Reproduction steps:

• Install Jitendex for Yomitan (2024-12-09)
• Install JPDB v2.2 Frequency Kana (2024-10-13)
• Select "JPDBv2㋕" as "frequency sorting dictionary"
• Try searching for "卵", check that "卵 (たまご)" is the first result
• Set "result grouping mode" to "group related terms"
• Select "Jitendex.org [2024-12-09]" as "primary dictionary"
• Search for "卵"
  • Expected behaviour: "卵 (たまご)" should be the first result
  • Actual behaviour: "卵 (かい)" is the first result while "卵 (たまご)" become the second.

Browser version
Firefox 134.0b10

Yomitan version
24.12.12.0

Exported settings file
n/a