What is the test for misconduct in a federal civil case involving a prosecutor's "intemperate behavior" to the jury?

"'When a prosecutor's intemperate behavior is sufficiently egregious that it infects the trial with such a degree of unfairness as to render the subsequent conviction a denial of due process, the federal Constitution is violated.'" (People v. Jablonski (2006) 37 Cal.4th 774, 835 (Jablonski).) "'Prosecutorial misconduct that falls short of rendering the trial fundamentally unfair may still constitute misconduct under state law if it involves the use of deceptive or reprehensible methods to persuade the trial court or the jury.'" (Ibid.) "When attacking the prosecutor's remarks to the jury, the defendant must show that, '[i]n the context of the whole argument and the instructions' [citation], there was 'a reasonable likelihood the jury understood or applied the complained-of comments in an improper or erroneous manner. [Citations.] In conducting this inquiry, we "do not lightly infer" that the jury drew the most damaging rather than the least damaging meaning from the prosecutor's statements.'" (People v. Centeno (2014) 60 Cal.4th 659, 667.)