NativeAOT: Reenable -dead_strip platform linker optimization by default

[ivanpovazan]

Description

NativeAOT now properly marks all symbols as non-deadstrippable in the object file it generates: dotnet/runtime@d9a6607
And uses -dead_strip as the default build option.

In this PR we are doing the same - reenabling the -dead_strip as the default platform linker switch.
This reverts previous workaround introduced in: f212f6b

Size savings

MySingleView	Main	This PR	diff (%)
SOD (MB)	2,87	2,70	-5,99%
,ipa (MB)	1,22	1,17	-4,61%

Even though this brings 4-5% size reduction for a MySingleView app, the size savings are not proportional to the app size, as the savings are coming from stripping native libraries only.
Based on measurements reported in dotnet/runtime@d9a6607 the actual expected savings for a MAUI app are around ~1.5%.

---

Fixes #18605 and dotnet/runtime#88032

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✅ cecil: All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (iOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (MacCatalyst): All 1 tests passed. [attempt 2] Html Report (VSDrops) Download
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✅ dotnettests (tvOS): All 1 tests passed. Html Report (VSDrops) Download
✅ framework: All 6 tests passed. Html Report (VSDrops) Download
✅ fsharp: All 7 tests passed. Html Report (VSDrops) Download
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✅ install-source: All 1 tests passed. Html Report (VSDrops) Download
✅ interdependent-binding-projects: All 7 tests passed. Html Report (VSDrops) Download
✅ introspection: All 8 tests passed. Html Report (VSDrops) Download
✅ linker: All 65 tests passed. Html Report (VSDrops) Download
✅ mac-binding-project: All 1 tests passed. Html Report (VSDrops) Download
✅ mmp: All 2 tests passed. Html Report (VSDrops) Download
✅ mononative: All 6 tests passed. [attempt 2] Html Report (VSDrops) Download
✅ monotouch (iOS): All 11 tests passed. Html Report (VSDrops) Download
✅ monotouch (MacCatalyst): All 8 tests passed. Html Report (VSDrops) Download
✅ monotouch (macOS): All 9 tests passed. Html Report (VSDrops) Download
✅ monotouch (tvOS): All 11 tests passed. Html Report (VSDrops) Download
✅ monotouch (watchOS): All 4 tests passed. Html Report (VSDrops) Download
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✅ xtro: All 2 tests passed. Html Report (VSDrops) Download

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[rolfbjarne]

The windows test failure is a known issue.