fix: FlatList initialScrollIndex

[efstathiosntonas]

Items above initialScrollIndex on a fixed height list won't render, there are numerous bugs on react-native FlatList regarding this issue dated even back to 2015:

• https://github.com/facebook/react-native/issues/1831
• https://github.com/facebook/react-native/issues/8607
• https://github.com/facebook/react-native/issues/13316
• https://github.com/meliorence/react-native-snap-carousel/issues/238

Problem:

Using this style which renders the whole list without the need to scroll it (applied on a really small list of 5 items):

optionsList: {
        maxHeight: 300
      },
      option: {
        container: {
          width: "100%",
          borderRadius: 8
        }
    }

...results in this issue shown below where the items above the initialScrollIndex are not rendered:

https://github.com/MobileReality/react-native-select-pro/assets/717975/87ca13f1-e1a1-4f89-a7b7-10125a27ca7d

After applying the fix proposed in this PR:

https://github.com/MobileReality/react-native-select-pro/assets/717975/e1b024a8-3eb6-437c-8c42-6773e892e02b

This is without the maxHeight: mvs(300) so it works fine in all scenarios:

https://github.com/MobileReality/react-native-select-pro/assets/717975/7d76a60e-3b0f-4a99-abda-a80ef4cc28d6

These changes align with SectionOptionsList:

• https://github.com/efstathiosntonas/react-native-select-pro/blob/780db33a4f7912f6a52205c7efac0819a5101e89/packages/react-native-select-pro/src/components/section-options-list/section-options-list.tsx#L71
• https://github.com/efstathiosntonas/react-native-select-pro/blob/780db33a4f7912f6a52205c7efac0819a5101e89/packages/react-native-select-pro/src/components/section-options-list/section-options-list.tsx#L37

[changeset-bot[bot]]

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Latest commit: 04602dea0200299e3e7d49fe514a069476b503c3

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[efstathiosntonas]

includes bonus fix for:

• https://github.com/MobileReality/react-native-select-pro/issues/232
• https://github.com/MobileReality/react-native-select-pro/issues/214

[gitsad]

@efstathiosntonas thanks for your contribution!

[efstathiosntonas]

@gitsad anytime, keep it up!