Check and throw GUI error when run_prefix is duplicated in per_sample_FASTQ association

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Example:
there are 2 samples that have different sample_name (super close)
but the exact same run_prefix so the GUI allows you to proceed, when
it should not. Basically, you have 384 samples but only 383
run_prefixes and pair of sequence files; the problematic samples are:

$ grep 'Blank_3_C4_S'
/qmounts/qiita_data/templates/13546_prep_10638_20210405-213429.txt
13546.Blank.3..C4 UCSDMI 210320_A00953_0260_BH23GYDSX2/metaT_WW/
Metatranscriptomicsofviral enriched wastewater samples iTru5_103_C
iTru7_305_04 CGTACGAA AAGGCGTA Illumina NovaSeq 6218 KHP Illumina
metaT_WW 10638 2021-03-20 Blank_3_C4_S metaT_WW_P3
2020_03_15_MetaT_WW_samplesheet Sequencing by synthesis F7
13546.Blank.3.C4 UCSDMI 210320_A00953_0260_BH23GYDSX2/metaT_WW/
Metatranscriptomicsofviral enriched wastewater samples iTru5_109_A
iTru7_303_10 ATTCCTCC AGCGAGAT Illumina NovaSeq 6200 KHP Illumina
metaT_WW 10638 2021-03-20 Blank_3_C4_S metaT_WW_P3
2020_03_15_MetaT_WW_samplesheet Sequencing by synthesis B3