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• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have searched for related issues and found none that matched my issue.
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Relevant Package

rule-tester

Repro Code

See: https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/eslint-plugin/tests/rules/space-infix-ops.test.ts#L1021-L1049

{
  invalid: [
    {
      code: `
        type Test=|string|(((() => void)))|string;
      `,
      output: `
        type Test = |string | (((() => void))) | string;
      `,
      errors: [
        {
          messageId: 'missingSpace',
          column: 18,
          line: 2,
        },
        {
          messageId: 'missingSpace',
          column: 19,
          line: 2,
        },
        {
          messageId: 'missingSpace',
          column: 26,
          line: 2,
        },
        {
          messageId: 'missingSpace',
          column: 43,
          line: 2,
        },
      ],
    },
  ],
}

Description

Splits from this thread:
#8065 (comment)

The code should be fixed properly when there are multiple fixes on the same line.
In the repro code, the fix should actually be

type Test = | string | (((() => void))) | string;

And in the thread, it should've been fixed regardless of me adding space as a workaround
(you can see that I've changed it from ${'a'}${'b'} to ${'a'} ${'b'})

Opened a draft PR to start an investigation.
Seems like there are some actual wrong fixes in the tests.