fix(billing): Gifted profile hour subtext

[jarrettscott]

Closes: https://github.com/getsentry/getsentry/issues/17065

Removes the "0 Reserved" from the Profile Hour subtext when displaying the org's gifted units.

Before

After

[codecov]

❌ 3 Tests Failed:

Tests completed	Failed	Passed	Skipped
10065	3	10062	5

View the top 3 failed test(s) by shortest run time

formatReservedWithUnits returns correct string for Profile Duration

Stack Traces | 0.014s run time

Error: expect(received).toBe(expected) // Object.is equality

Expected: "1,000"
Received: "0.0002777777777777778"
    at Object.<anonymous> (.../gsApp/utils/billing.spec.tsx:108:94)
    at Promise.then.completed (.../jest-circus/build/utils.js:298:28)
    at new Promise (<anonymous>)
    at callAsyncCircusFn (.../jest-circus/build/utils.js:231:10)
    at _callCircusTest (.../jest-circus/build/run.js:316:40)
    at processTicksAndRejections (node:internal/process/task_queues:105:5)
    at _runTest (.../jest-circus/build/run.js:252:3)
    at _runTestsForDescribeBlock (.../jest-circus/build/run.js:126:9)
    at _runTestsForDescribeBlock (.../jest-circus/build/run.js:121:9)
    at run (.../jest-circus/build/run.js:71:3)
    at runAndTransformResultsToJestFormat (.../build/legacy-code-todo-rewrite/jestAdapterInit.js:122:21)
    at jestAdapter (.../build/legacy-code-todo-rewrite/jestAdapter.js:79:19)
    at runTestInternal (.../jest-runner/build/runTest.js:367:16)
    at runTest (.../jest-runner/build/runTest.js:444:34)
    at Object.worker (.../jest-runner/build/testWorker.js:106:12)

Recurring Credits renders profile duration ui recurring credits

Stack Traces | 0.019s run time

Error: expect(element).toHaveTextContent()

Expected element to have text content:
  +10/mo
Received:
  +0.000002777777777777778/mo
    at Object.<anonymous> (.../views/subscriptionPage/recurringCredits.spec.tsx:147:63)

Recurring Credits renders profile duration recurring credits

Stack Traces | 0.022s run time

Error: expect(element).toHaveTextContent()

Expected element to have text content:
  +10/mo
Received:
  +0.000002777777777777778/mo
    at Object.<anonymous> (.../views/subscriptionPage/recurringCredits.spec.tsx:112:63)

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