regression in the representation of exact real balls returned by arb_get_str #1410
Description
Not really a bug, but possibly an unintended side effect of a0f4ad8: With arb 2.22.1, one had
sage: RBF100 = RealBallField(100)
sage: RBF100(10^100)
1.000000000000000000000000000000e+100
whereas with flint 3α, this has become
sage: RBF100 = RealBallField(100)
sage: RBF100(10^100)
[1.000000000000000000000000000000e+100 +/- 1e+65]